w3photo: Validation Ontology

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Validation Ontology


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		Documentation (OWL Full)


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		RDFS+OWL serialization


		Ontology for validations

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w3photo:Annotation class

class for validating w3photo annotations

Label:	w3photo annotation
Namespace:	w3photo
Status:	unstable
Properties:	w3photo:identifiedBy (inherited) an:annotates (inherited) an:author (inherited) an:created (inherited) foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	an:Annotation
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

<owl:Class rdf:about="http://www.example.com/specs/w3photo#Annotation">
  <rdfs:label>w3photo annotation</rdfs:label>
  <rdfs:comment>class for validating w3photo annotations</rdfs:comment>
  <rdfs:subClassOf rdf:resource="http://www.w3.org/2000/10/annotation-ns#Annotation"/>
  <rdfs:subClassOf>
    <owl:Restriction>
      <owl:onProperty rdf:resource="http://www.w3.org/2000/10/annotation-ns#annotates"/>
      <owl:allValuesFrom rdf:resource="http://xmlns.com/foaf/0.1/Image"/>
    </owl:Restriction>
  </rdfs:subClassOf>
  <rdfs:subClassOf>
    <owl:Restriction>
      <owl:onProperty rdf:resource="http://www.w3.org/2000/10/annotation-ns#author"/>
      <owl:allValuesFrom rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
    </owl:Restriction>
  </rdfs:subClassOf>
  <rdfs:subClassOf>
    <owl:Restriction>
      <owl:onProperty rdf:resource="http://www.w3.org/2000/10/annotation-ns#annotates"/>
      <owl:cardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:cardinality>
    </owl:Restriction>
  </rdfs:subClassOf>
  <rdfs:subClassOf>
    <owl:Restriction>
      <owl:onProperty rdf:resource="http://www.w3.org/2000/10/annotation-ns#author"/>
      <owl:cardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:cardinality>
    </owl:Restriction>
  </rdfs:subClassOf>
  <rdfs:subClassOf>
    <owl:Restriction>
      <owl:onProperty rdf:resource="http://www.w3.org/2000/10/annotation-ns#created"/>
      <owl:cardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:cardinality>
    </owl:Restriction>
  </rdfs:subClassOf>
</owl:Class>

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w3photo:identifiedBy property

any identifying property

Label:	identified by
Namespace:	w3photo
Status:	testing
Domain:	owl:Thing
Range:	owl:Thing
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	foaf:mbox_sha1sum foaf:homepage foaf:weblog foaf:page foaf:name
Equiv. properties:	no equivalent properties found

<owl:ObjectProperty rdf:about="http://www.example.com/specs/w3photo#identifiedBy">
  <rdf:type rdf:resource="&owl;InverseFunctionalProperty"/>
  <rdfs:label>identified by</rdfs:label>
  <rdfs:comment>any identifying property</rdfs:comment>
  <rdfs:domain rdf:resource="&owl;Thing"/>
  <rdfs:range rdf:resource="&owl;Thing"/>
</owl:ObjectProperty>

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an:annotates property

Relates an Annotation to the resource to which the Annotation applies.

Label:	annotates
Namespace:	Annotea Annotation Schema
Status:	stable
Domain:	an:Annotation
Range:	owl:Thing
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:ObjectProperty rdf:about="http://www.w3.org/2000/10/annotation-ns#annotates">
  <rdf:type rdf:resource="&owl;FunctionalProperty"/>
  <rdfs:label>annotates</rdfs:label>
  <rdfs:comment>Relates an Annotation to the resource to which the Annotation applies.</rdfs:comment>
  <rdfs:domain rdf:resource="http://www.w3.org/2000/10/annotation-ns#Annotation"/>
  <rdfs:range rdf:resource="&owl;Thing"/>
</owl:ObjectProperty>

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foaf:Image class

An image.

Label:	Image
Namespace:	FOAF - Friend of a Friend
Status:	testing
Properties:	w3photo:identifiedBy (inherited) foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depicts foaf:depiction (inherited)
Superclasses:	foaf:Document
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

<owl:Class rdf:about="http://xmlns.com/foaf/0.1/Image">
  <rdfs:label>Image</rdfs:label>
  <rdfs:comment>An image.</rdfs:comment>
  <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Document"/>
</owl:Class>

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foaf:mbox_sha1sum property

The sha1sum of the URI of an Internet mailbox associated with its 1st owner.

Label:	sha1sum of a personal mailbox name
Namespace:	FOAF - Friend of a Friend
Status:	testing
Domain:	foaf:Agent
Range:	rdfs:Literal
Superproperties:	w3photo:identifiedBy
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

A foaf:mbox_sha1sum of a foaf:Person is a textual representation of the result of applying the SHA1 mathematical functional to a 'mailto:' identifier (URI) for an Internet mailbox that they stand in a foaf:mbox relationship to.

<owl:DatatypeProperty rdf:about="http://xmlns.com/foaf/0.1/mbox_sha1sum">
  <rdf:type rdf:resource="&owl;InverseFunctionalProperty"/>
  <rdfs:label>sha1sum of a personal mailbox name</rdfs:label>
  <rdfs:comment>The sha1sum of the URI of an Internet mailbox associated with its 1st owner.</rdfs:comment>
  <rdfs:domain rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
  <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Literal"/>
  <rdfs:subPropertyOf rdf:resource="http://www.example.com/specs/w3photo#identifiedBy"/>
</owl:DatatypeProperty>

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foaf:Agent class

An agent (eg. person, group, software or physical artifact)

Label:	Agent
Namespace:	FOAF - Friend of a Friend
Status:	unstable
Properties:	w3photo:identifiedBy (inherited) foaf:mbox_sha1sum foaf:homepage foaf:weblog foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	no superclasses found (excluding equivalent classes)
Subclasses:	foaf:Person cc:Agent foaf:Organization
Equivalent classes:	no equivalent classes found

The foaf:Agent class is the class of agents; things that do stuff. A well known sub-class is foaf:Person, representing people. w3photo-specific: For a foaf:Agent, who is the dc:creator of a foaf:Image, at least one identifying property is required.

<owl:Class rdf:about="http://xmlns.com/foaf/0.1/Agent">
  <rdfs:label>Agent</rdfs:label>
  <rdfs:comment>An agent (eg. person, group, software or physical artifact)</rdfs:comment>
  <rdfs:subClassOf>
    <owl:Restriction>
      <owl:onProperty rdf:resource="http://www.example.com/specs/w3photo#identifiedBy"/>
      <owl:minCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:minCardinality>
    </owl:Restriction>
  </rdfs:subClassOf>
</owl:Class>

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foaf:Person class

A person

Label:	Person
Namespace:	FOAF - Friend of a Friend
Status:	testing
Properties:	w3photo:identifiedBy (inherited) foaf:mbox_sha1sum (inherited) foaf:homepage (inherited) foaf:weblog (inherited) foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	foaf:Agent
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

The foaf:Person class represents people. Something is a foaf:Person if it is a person. The foaf:Person class is a sub-class of the foaf:Agent class, since all people are considered 'agents' in FOAF.

<owl:Class rdf:about="http://xmlns.com/foaf/0.1/Person">
  <rdfs:label>Person</rdfs:label>
  <rdfs:comment>A person</rdfs:comment>
  <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
</owl:Class>

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an:author property

The name of the person or organization most responsible for creating the Annotation.

Label:	annotation author
Namespace:	Annotea Annotation Schema
Status:	stable
Domain:	an:Annotation
Range:	unspecified
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:ObjectProperty rdf:about="http://www.w3.org/2000/10/annotation-ns#author">
  <rdfs:label>annotation author</rdfs:label>
  <rdfs:comment>The name of the person or organization most responsible for creating the Annotation.</rdfs:comment>
  <rdfs:domain rdf:resource="http://www.w3.org/2000/10/annotation-ns#Annotation"/>
</owl:ObjectProperty>

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cc:license property

A mandatory property for w3phot annotations

Label:	has license
Namespace:	Creative Commons
Status:	stable
Domain:	cc:Work
Range:	cc:License
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:ObjectProperty rdf:about="http://web.resource.org/cc/license">
  <rdfs:label>has license</rdfs:label>
  <rdfs:comment>A mandatory property for w3phot annotations</rdfs:comment>
  <rdfs:domain rdf:resource="http://web.resource.org/cc/Work"/>
  <rdfs:range rdf:resource="http://web.resource.org/cc/License"/>
</owl:ObjectProperty>

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cc:Agent class

something capable of creating things

Label:	agent
Namespace:	Creative Commons
Status:	stable
Properties:	w3photo:identifiedBy (inherited) foaf:mbox_sha1sum (inherited) foaf:homepage (inherited) foaf:weblog (inherited) foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	foaf:Agent
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

including persons, corporations or computers. w3photo-specific: cc:Agent MUST have some identifying property, one of foaf:mbox_sha1sum, foaf:homepage, foaf:weblog, foaf:page, or foaf:name (name is the worst case option) how to use: subject: a w3photo:Annotation predicate: dc:rights object: a cc:Agent

<owl:Class rdf:about="http://web.resource.org/cc/Agent">
  <rdfs:label>agent</rdfs:label>
  <rdfs:comment>something capable of creating things</rdfs:comment>
  <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
</owl:Class>

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foaf:Organization class

An organization.

Label:	Organization
Namespace:	FOAF - Friend of a Friend
Status:	unstable
Properties:	w3photo:identifiedBy (inherited) foaf:mbox_sha1sum (inherited) foaf:homepage (inherited) foaf:weblog (inherited) foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	foaf:Agent
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

<owl:Class rdf:about="http://xmlns.com/foaf/0.1/Organization">
  <rdfs:label>Organization</rdfs:label>
  <rdfs:comment>An organization.</rdfs:comment>
  <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
</owl:Class>

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geo:Point class

A point.

Label:	Point
Namespace:	WGS84 Geo Positioning
Status:	testing
Properties:	w3photo:identifiedBy (inherited) foaf:page (inherited) foaf:name (inherited) geo:lat (inherited) geo:long (inherited) geo:alt (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	geo:SpatialThing
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

A point, typically described using a coordinate system relative to Earth, such as WGS84.

<owl:Class rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#Point">
  <rdfs:label>Point</rdfs:label>
  <rdfs:comment>A point.</rdfs:comment>
  <rdfs:subClassOf rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing"/>
</owl:Class>

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geo:SpatialThing class

Anything with spatial extent.

Label:	Spatial Thing
Namespace:	WGS84 Geo Positioning
Status:	testing
Properties:	w3photo:identifiedBy (inherited) foaf:page (inherited) foaf:name (inherited) geo:lat geo:long geo:alt w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	no superclasses found (excluding equivalent classes)
Subclasses:	geo:Point
Equivalent classes:	no equivalent classes found

Anything with spatial extent, i.e. size, shape, or position. e.g. people, places, bowling balls, as well as abstract areas like cubes.

<owl:Class rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing">
  <rdfs:label>Spatial Thing</rdfs:label>
  <rdfs:comment>Anything with spatial extent.</rdfs:comment>
</owl:Class>

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ical:Vevent class


Label:	Event
Namespace:	iCalendar (RFC 2445)
Status:	stable
Properties:	w3photo:identifiedBy (inherited) foaf:page (inherited) foaf:name (inherited) w3photo:regionDepiction (inherited) foaf:depiction (inherited)
Superclasses:	no superclasses found (excluding equivalent classes)
Subclasses:	no subclasses found (excluding equivalent classes)
Equivalent classes:	no equivalent classes found

<owl:Class rdf:about="http://www.w3.org/2002/12/cal/ical#Vevent">
  <rdfs:label>Event</rdfs:label>
</owl:Class>

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foaf:depiction property

A depiction of some thing.

Label:	depiction
Namespace:	FOAF - Friend of a Friend
Status:	testing
Domain:	owl:Thing
Range:	foaf:Image
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

The foaf:depiction property is a relationship between a thing and a foaf:Image that depicts it. As such it is an inverse of the foaf:depicts relationship. A common use of foaf:depiction (and foaf:depicts) is to indicate the contents of a digital image, for example the people or objects represented in an online photo gallery. © FOAF

<owl:ObjectProperty rdf:about="http://xmlns.com/foaf/0.1/depiction">
  <rdfs:label>depiction</rdfs:label>
  <rdfs:comment>A depiction of some thing.</rdfs:comment>
  <owl:inverseOf rdf:resource="http://xmlns.com/foaf/0.1/depicts"/>
  <rdfs:domain rdf:resource="&owl;Thing"/>
  <rdfs:range rdf:resource="http://xmlns.com/foaf/0.1/Image"/>
</owl:ObjectProperty>

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foaf:depicts property

A thing depicted in this representation.

Label:	depicts
Namespace:	FOAF - Friend of a Friend
Status:	testing
Domain:	foaf:Image
Range:	owl:Thing
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

The foaf:depicts property is a relationship between a foaf:Image and something that the image depicts. As such it is an inverse of the foaf:depiction relationship. © FOAF

<owl:ObjectProperty rdf:about="http://xmlns.com/foaf/0.1/depicts">
  <rdfs:label>depicts</rdfs:label>
  <rdfs:comment>A thing depicted in this representation.</rdfs:comment>
  <owl:inverseOf rdf:resource="http://xmlns.com/foaf/0.1/depiction"/>
  <rdfs:domain rdf:resource="http://xmlns.com/foaf/0.1/Image"/>
  <rdfs:range rdf:resource="&owl;Thing"/>
</owl:ObjectProperty>

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geo:alt property

The WGS84 altitude of a SpatialThing.

Label:	altitude
Namespace:	WGS84 Geo Positioning
Status:	testing
Domain:	geo:SpatialThing
Range:	rdfs:Literal
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:DatatypeProperty rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#alt">
  <rdfs:label>altitude</rdfs:label>
  <rdfs:comment>The WGS84 altitude of a SpatialThing.</rdfs:comment>
  <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing"/>
  <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Literal"/>
</owl:DatatypeProperty>

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geo:lat property

The WGS84 latitude of a SpatialThing.

Label:	latitude
Namespace:	WGS84 Geo Positioning
Status:	testing
Domain:	geo:SpatialThing
Range:	rdfs:Literal
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:DatatypeProperty rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#lat">
  <rdfs:label>latitude</rdfs:label>
  <rdfs:comment>The WGS84 latitude of a SpatialThing.</rdfs:comment>
  <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing"/>
  <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Literal"/>
</owl:DatatypeProperty>

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geo:long property

The WGS84 longitude of a SpatialThing.

Label:	longitude
Namespace:	WGS84 Geo Positioning
Status:	testing
Domain:	geo:SpatialThing
Range:	rdfs:Literal
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:DatatypeProperty rdf:about="http://www.w3.org/2003/01/geo/wgs84_pos#long">
  <rdfs:label>longitude</rdfs:label>
  <rdfs:comment>The WGS84 longitude of a SpatialThing.</rdfs:comment>
  <rdfs:domain rdf:resource="http://www.w3.org/2003/01/geo/wgs84_pos#SpatialThing"/>
  <rdfs:range rdf:resource="http://www.w3.org/2000/01/rdf-schema#Literal"/>
</owl:DatatypeProperty>

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w3photo:regionDepiction property

A relation between an object and a region of a photographic still image that depicts it.

Label:	depiction
Namespace:	w3photo
Status:	testing
Domain:	owl:Thing
Range:	from excluded namespace
Superproperties:	no superproperties found (excluding equivalent properties)
Subproperties:	no subproperties found (excluding equivalent properties)
Equiv. properties:	no equivalent properties found

<owl:ObjectProperty rdf:about="http://www.example.com/specs/w3photo#regionDepiction">
  <rdfs:label>depiction</rdfs:label>
  <rdfs:comment>A relation between an object and a region of a photographic still image that depicts it.</rdfs:comment>
  <rdfs:domain rdf:resource="&owl;Thing"/>
</owl:ObjectProperty>

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Ontology

w3photo (Validation Ontology)

Base URI

http://www.example.com/specs/w3photo#

URI of local version

http://www.bnowack.de/w3photo/specs/ontology4

Vocabulary format

OWL Full , no 'xml:lang' attributes

Version

2004-01

Comment

some experimental classes and properties for validating w3photo annotations.

RDF/XML

<?xml version="1.0" ?>
<!DOCTYPE rdf:RDF [
  <!ENTITY an "http://www.w3.org/2000/10/annotation-ns#">
  <!ENTITY cc "http://web.resource.org/cc/">
  <!ENTITY foaf "http://xmlns.com/foaf/0.1/">
  <!ENTITY geo "http://www.w3.org/2003/01/geo/wgs84_pos#">
  <!ENTITY ical "http://www.w3.org/2002/12/cal/ical#">
  <!ENTITY owl "http://www.w3.org/2002/07/owl#">
  <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#">
  <!ENTITY w3photo "http://www.example.com/specs/w3photo#">
  <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#">
]>
<rdf:RDF xml:base="http://www.example.com/specs/w3photo"
  xmlns:an="&an;" 
  xmlns:cc="&cc;" 
  xmlns:foaf="&foaf;" 
  xmlns:geo="&geo;" 
  xmlns:ical="&ical;" 
  xmlns:owl="&owl;" 
  xmlns:rdf="&rdf;" 
  xmlns:rdfs="&rdfs;" 
  xmlns:w3photo="&w3photo;" 
  xmlns:xsd="&xsd;">

  <owl:Ontology rdf:about="">
    <rdfs:label>w3photo (Validation Ontology)</rdfs:label>
    <rdfs:comment>some experimental classes and properties for validating w3photo annotations.</rdfs:comment>
    <owl:versionInfo>2004-01</owl:versionInfo>
  </owl:Ontology>

  <owl:Class rdf:ID="Annotation">
    <rdfs:label>w3photo annotation</rdfs:label>
    <rdfs:comment>class for validating w3photo annotations</rdfs:comment>
    <rdfs:subClassOf rdf:resource="&an;Annotation"/>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="&an;annotates"/>
        <owl:allValuesFrom rdf:resource="&foaf;Image"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="&an;author"/>
        <owl:allValuesFrom rdf:resource="&foaf;Agent"/>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="&an;annotates"/>
        <owl:cardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:cardinality>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="&an;author"/>
        <owl:cardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:cardinality>
      </owl:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="&an;created"/>
        <owl:cardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:cardinality>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>

  <owl:ObjectProperty rdf:ID="identifiedBy">
    <rdf:type rdf:resource="&owl;InverseFunctionalProperty"/>
    <rdfs:label>identified by</rdfs:label>
    <rdfs:comment>any identifying property</rdfs:comment>
    <rdfs:domain rdf:resource="&owl;Thing"/>
    <rdfs:range rdf:resource="&owl;Thing"/>
  </owl:ObjectProperty>

  <owl:ObjectProperty rdf:about="&an;annotates">
    <rdf:type rdf:resource="&owl;FunctionalProperty"/>
    <rdfs:label>annotates</rdfs:label>
    <rdfs:comment>Relates an Annotation to the resource to which the Annotation applies.</rdfs:comment>
    <rdfs:domain rdf:resource="&an;Annotation"/>
    <rdfs:range rdf:resource="&owl;Thing"/>
  </owl:ObjectProperty>

  <owl:Class rdf:about="&foaf;Image">
    <rdfs:label>Image</rdfs:label>
    <rdfs:comment>An image.</rdfs:comment>
    <rdfs:subClassOf rdf:resource="&foaf;Document"/>
  </owl:Class>

  <owl:DatatypeProperty rdf:about="&foaf;mbox_sha1sum">
    <rdf:type rdf:resource="&owl;InverseFunctionalProperty"/>
    <rdfs:label>sha1sum of a personal mailbox name</rdfs:label>
    <rdfs:comment>The sha1sum of the URI of an Internet mailbox associated with its 1st owner.</rdfs:comment>
    <rdfs:domain rdf:resource="&foaf;Agent"/>
    <rdfs:range rdf:resource="&rdfs;Literal"/>
    <rdfs:subPropertyOf rdf:resource="#identifiedBy"/>
  </owl:DatatypeProperty>

  <owl:Class rdf:about="&foaf;Agent">
    <rdfs:label>Agent</rdfs:label>
    <rdfs:comment>An agent (eg. person, group, software or physical artifact)</rdfs:comment>
    <rdfs:subClassOf>
      <owl:Restriction>
        <owl:onProperty rdf:resource="#identifiedBy"/>
        <owl:minCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:minCardinality>
      </owl:Restriction>
    </rdfs:subClassOf>
  </owl:Class>

  <owl:Class rdf:about="&foaf;Person">
    <rdfs:label>Person</rdfs:label>
    <rdfs:comment>A person</rdfs:comment>
    <rdfs:subClassOf rdf:resource="&foaf;Agent"/>
  </owl:Class>

  <owl:ObjectProperty rdf:about="&an;author">
    <rdfs:label>annotation author</rdfs:label>
    <rdfs:comment>The name of the person or organization most responsible for creating the Annotation.</rdfs:comment>
    <rdfs:domain rdf:resource="&an;Annotation"/>
  </owl:ObjectProperty>

  <owl:ObjectProperty rdf:about="&cc;license">
    <rdfs:label>has license</rdfs:label>
    <rdfs:comment>A mandatory property for w3phot annotations</rdfs:comment>
    <rdfs:domain rdf:resource="&cc;Work"/>
    <rdfs:range rdf:resource="&cc;License"/>
  </owl:ObjectProperty>

  <owl:Class rdf:about="&cc;Agent">
    <rdfs:label>agent</rdfs:label>
    <rdfs:comment>something capable of creating things</rdfs:comment>
    <rdfs:subClassOf rdf:resource="&foaf;Agent"/>
  </owl:Class>

  <owl:Class rdf:about="&foaf;Organization">
    <rdfs:label>Organization</rdfs:label>
    <rdfs:comment>An organization.</rdfs:comment>
    <rdfs:subClassOf rdf:resource="&foaf;Agent"/>
  </owl:Class>

  <owl:Class rdf:about="&geo;Point">
    <rdfs:label>Point</rdfs:label>
    <rdfs:comment>A point.</rdfs:comment>
    <rdfs:subClassOf rdf:resource="&geo;SpatialThing"/>
  </owl:Class>

  <owl:Class rdf:about="&geo;SpatialThing">
    <rdfs:label>Spatial Thing</rdfs:label>
    <rdfs:comment>Anything with spatial extent.</rdfs:comment>
  </owl:Class>

  <owl:Class rdf:about="&ical;Vevent">
    <rdfs:label>Event</rdfs:label>
  </owl:Class>

  <owl:ObjectProperty rdf:about="&foaf;depiction">
    <rdfs:label>depiction</rdfs:label>
    <rdfs:comment>A depiction of some thing.</rdfs:comment>
    <owl:inverseOf rdf:resource="&foaf;depicts"/>
    <rdfs:domain rdf:resource="&owl;Thing"/>
    <rdfs:range rdf:resource="&foaf;Image"/>
  </owl:ObjectProperty>

  <owl:ObjectProperty rdf:about="&foaf;depicts">
    <rdfs:label>depicts</rdfs:label>
    <rdfs:comment>A thing depicted in this representation.</rdfs:comment>
    <owl:inverseOf rdf:resource="&foaf;depiction"/>
    <rdfs:domain rdf:resource="&foaf;Image"/>
    <rdfs:range rdf:resource="&owl;Thing"/>
  </owl:ObjectProperty>

  <owl:DatatypeProperty rdf:about="&geo;alt">
    <rdfs:label>altitude</rdfs:label>
    <rdfs:comment>The WGS84 altitude of a SpatialThing.</rdfs:comment>
    <rdfs:domain rdf:resource="&geo;SpatialThing"/>
    <rdfs:range rdf:resource="&rdfs;Literal"/>
  </owl:DatatypeProperty>

  <owl:DatatypeProperty rdf:about="&geo;lat">
    <rdfs:label>latitude</rdfs:label>
    <rdfs:comment>The WGS84 latitude of a SpatialThing.</rdfs:comment>
    <rdfs:domain rdf:resource="&geo;SpatialThing"/>
    <rdfs:range rdf:resource="&rdfs;Literal"/>
  </owl:DatatypeProperty>

  <owl:DatatypeProperty rdf:about="&geo;long">
    <rdfs:label>longitude</rdfs:label>
    <rdfs:comment>The WGS84 longitude of a SpatialThing.</rdfs:comment>
    <rdfs:domain rdf:resource="&geo;SpatialThing"/>
    <rdfs:range rdf:resource="&rdfs;Literal"/>
  </owl:DatatypeProperty>

  <owl:ObjectProperty rdf:ID="regionDepiction">
    <rdfs:label>depiction</rdfs:label>
    <rdfs:comment>A relation between an object and a region of a photographic still image that depicts it.</rdfs:comment>
    <rdfs:domain rdf:resource="&owl;Thing"/>
  </owl:ObjectProperty>


</rdf:RDF>