@prefix foaf: . @prefix owl: . @prefix dc11: . @prefix wot: . @prefix rdfs: . @prefix ns0: . @prefix schema: . @prefix geo: . @prefix dc: . @prefix rdf: . @prefix skos: . foaf: a owl:Ontology ; dc11:title "Friend of a Friend (FOAF) vocabulary" ; dc11:description "The Friend of a Friend (FOAF) RDF vocabulary, described using W3C RDF Schema and the Web Ontology Language." . wot:assurance a owl:AnnotationProperty . wot:src_assurance a owl:AnnotationProperty . a owl:AnnotationProperty . dc11:description a owl:AnnotationProperty . dc11:title a owl:AnnotationProperty . dc11:date a owl:AnnotationProperty . rdfs:Class a owl:Class . foaf:LabelProperty a rdfs:Class, owl:Class ; ns0:term_status "unstable" ; rdfs:label "Label Property" ; rdfs:comment "A foaf:LabelProperty is any RDF property with texual values that serve as labels." ; rdfs:isDefinedBy foaf: . foaf:Person a rdfs:Class, owl:Class ; rdfs:label "Person" ; rdfs:comment "A person." ; ns0:term_status "stable" ; owl:equivalentClass schema:Person, ; rdfs:subClassOf foaf:Agent, geo:SpatialThing ; rdfs:isDefinedBy foaf: ; owl:disjointWith foaf:Organization, foaf:Project . foaf:Agent a owl:Class, rdfs:Class ; ns0:term_status "stable" ; rdfs:label "Agent" ; rdfs:comment "An agent (eg. person, group, software or physical artifact)." ; owl:equivalentClass dc:Agent . geo:SpatialThing a owl:Class ; rdfs:label "Spatial Thing" . foaf:Document a rdfs:Class, owl:Class ; rdfs:label "Document" ; rdfs:comment "A document." ; ns0:term_status "stable" ; owl:equivalentClass schema:CreativeWork ; rdfs:isDefinedBy foaf: ; owl:disjointWith foaf:Organization, foaf:Project . foaf:Organization a rdfs:Class, owl:Class ; rdfs:label "Organization" ; rdfs:comment "An organization." ; ns0:term_status "stable" ; rdfs:subClassOf foaf:Agent ; rdfs:isDefinedBy foaf: ; owl:disjointWith foaf:Person, foaf:Document . foaf:Group a rdfs:Class, owl:Class ; ns0:term_status "stable" ; rdfs:label "Group" ; rdfs:comment "A class of Agents." ; rdfs:subClassOf foaf:Agent . foaf:Project a rdfs:Class, owl:Class ; ns0:term_status "testing" ; rdfs:label "Project" ; rdfs:comment "A project (a collective endeavour of some kind)." ; rdfs:isDefinedBy foaf: ; owl:disjointWith foaf:Person, foaf:Document . foaf:Image a rdfs:Class, owl:Class ; ns0:term_status "stable" ; rdfs:label "Image" ; rdfs:comment "An image." ; owl:equivalentClass schema:ImageObject ; rdfs:subClassOf foaf:Document ; rdfs:isDefinedBy foaf: . foaf:PersonalProfileDocument a rdfs:Class, owl:Class ; rdfs:label "PersonalProfileDocument" ; rdfs:comment "A personal profile RDF document." ; ns0:term_status "testing" ; rdfs:subClassOf foaf:Document . foaf:OnlineAccount a rdfs:Class, owl:Class ; ns0:term_status "testing" ; rdfs:label "Online Account" ; rdfs:comment "An online account." ; rdfs:isDefinedBy foaf: ; rdfs:subClassOf owl:Thing . owl:Thing rdfs:label "Thing" . foaf:OnlineGamingAccount a rdfs:Class, owl:Class ; ns0:term_status "unstable" ; rdfs:label "Online Gaming Account" ; rdfs:comment "An online gaming account." ; rdfs:subClassOf foaf:OnlineAccount ; rdfs:isDefinedBy foaf: . foaf:OnlineEcommerceAccount a rdfs:Class, owl:Class ; ns0:term_status "unstable" ; rdfs:label "Online E-commerce Account" ; rdfs:comment "An online e-commerce account." ; rdfs:subClassOf foaf:OnlineAccount ; rdfs:isDefinedBy foaf: . foaf:OnlineChatAccount a rdfs:Class, owl:Class ; ns0:term_status "unstable" ; rdfs:label "Online Chat Account" ; rdfs:comment "An online chat account." ; rdfs:subClassOf foaf:OnlineAccount ; rdfs:isDefinedBy foaf: . foaf:mbox a rdf:Property, owl:InverseFunctionalProperty, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "personal mailbox" ; rdfs:comment "A personal mailbox, ie. an Internet mailbox associated with exactly one owner, the first owner of this mailbox. This is a 'static inverse functional property', in that there is (across time and change) at most one individual that ever has any particular value for foaf:mbox." ; rdfs:domain foaf:Agent ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:mbox_sha1sum a rdf:Property, owl:InverseFunctionalProperty, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "sha1sum of a personal mailbox URI name" ; rdfs:comment "The sha1sum of the URI of an Internet mailbox associated with exactly one owner, the first owner of the mailbox." ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:gender a rdf:Property, owl:FunctionalProperty, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "gender" ; rdfs:comment "The gender of this Agent (typically but not necessarily 'male' or 'female')." ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:geekcode a rdf:Property, owl:DatatypeProperty ; ns0:term_status "archaic" ; rdfs:label "geekcode" ; rdfs:comment "A textual geekcode for this person, see http://www.geekcode.com/geek.html" ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:dnaChecksum a rdf:Property, owl:DatatypeProperty ; ns0:term_status "archaic" ; rdfs:label "DNA checksum" ; rdfs:comment "A checksum for the DNA of some thing. Joke." ; rdfs:isDefinedBy foaf: ; rdfs:range rdfs:Literal . foaf:sha1 a rdf:Property, owl:DatatypeProperty ; ns0:term_status "unstable" ; rdfs:label "sha1sum (hex)" ; rdfs:comment "A sha1sum hash, in hex." ; rdfs:domain foaf:Document ; rdfs:isDefinedBy foaf: . foaf:based_near a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "based near" ; rdfs:comment "A location that something is based near, for some broadly human notion of near." ; rdfs:domain geo:SpatialThing ; rdfs:range geo:SpatialThing ; rdfs:isDefinedBy foaf: . foaf:title a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "title" ; rdfs:comment "Title (Mr, Mrs, Ms, Dr. etc)" ; rdfs:isDefinedBy foaf: . foaf:nick a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "nickname" ; rdfs:comment "A short informal nickname characterising an agent (includes login identifiers, IRC and other chat nicknames)." ; rdfs:isDefinedBy foaf: . foaf:jabberID a rdf:Property, owl:DatatypeProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "jabber ID" ; rdfs:comment "A jabber ID for something." ; rdfs:isDefinedBy foaf: ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal . foaf:aimChatID a rdf:Property, owl:DatatypeProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "AIM chat ID" ; rdfs:comment "An AIM chat ID" ; rdfs:isDefinedBy foaf: ; rdfs:subPropertyOf foaf:nick ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal . foaf:skypeID a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "Skype ID" ; rdfs:comment "A Skype ID" ; rdfs:isDefinedBy foaf: ; rdfs:subPropertyOf foaf:nick ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal . foaf:icqChatID a rdf:Property, owl:DatatypeProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "ICQ chat ID" ; rdfs:comment "An ICQ chat ID" ; rdfs:isDefinedBy foaf: ; rdfs:subPropertyOf foaf:nick ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal . foaf:yahooChatID a rdf:Property, owl:DatatypeProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "Yahoo chat ID" ; rdfs:comment "A Yahoo chat ID" ; rdfs:isDefinedBy foaf: ; rdfs:subPropertyOf foaf:nick ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal . foaf:msnChatID a rdf:Property, owl:DatatypeProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "MSN chat ID" ; rdfs:comment "An MSN chat ID" ; rdfs:isDefinedBy foaf: ; rdfs:subPropertyOf foaf:nick ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal . foaf:name a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "name" ; rdfs:comment "A name for some thing." ; rdfs:domain owl:Thing ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: ; rdfs:subPropertyOf rdfs:label . foaf:firstName a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "firstName" ; rdfs:comment "The first name of a person." ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:lastName a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "lastName" ; rdfs:comment "The last name of a person." ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:givenName a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "Given name" ; rdfs:comment "The given name of some person." ; rdfs:isDefinedBy foaf: . foaf:givenname a rdf:Property, owl:DatatypeProperty ; ns0:term_status "archaic" ; rdfs:label "Given name" ; rdfs:comment "The given name of some person." ; rdfs:isDefinedBy foaf: . foaf:surname a rdf:Property, owl:DatatypeProperty ; ns0:term_status "archaic" ; rdfs:label "Surname" ; rdfs:comment "The surname of some person." ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:family_name a rdf:Property, owl:DatatypeProperty ; ns0:term_status "archaic" ; rdfs:label "family_name" ; rdfs:comment "The family name of some person." ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:familyName a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "familyName" ; rdfs:comment "The family name of some person." ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:phone a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "phone" ; rdfs:comment "A phone, specified using fully qualified tel: URI scheme (refs: http://www.w3.org/Addressing/schemes.html#tel)." ; rdfs:isDefinedBy foaf: . foaf:homepage a rdf:Property, owl:ObjectProperty, owl:InverseFunctionalProperty ; ns0:term_status "stable" ; rdfs:label "homepage" ; rdfs:comment "A homepage for some thing." ; rdfs:subPropertyOf foaf:page, foaf:isPrimaryTopicOf ; rdfs:domain owl:Thing ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:weblog a rdf:Property, owl:ObjectProperty, owl:InverseFunctionalProperty ; ns0:term_status "stable" ; rdfs:label "weblog" ; rdfs:comment "A weblog of some thing (whether person, group, company etc.)." ; rdfs:subPropertyOf foaf:page ; rdfs:domain foaf:Agent ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:openid a rdf:Property, owl:ObjectProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "openid" ; rdfs:comment "An OpenID for an Agent." ; rdfs:subPropertyOf foaf:isPrimaryTopicOf ; rdfs:domain foaf:Agent ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:tipjar a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "tipjar" ; rdfs:comment "A tipjar document for this agent, describing means for payment and reward." ; rdfs:subPropertyOf foaf:page ; rdfs:domain foaf:Agent ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:plan a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "plan" ; rdfs:comment "A .plan comment, in the tradition of finger and '.plan' files." ; rdfs:isDefinedBy foaf: ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal . foaf:made a rdf:Property, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "made" ; rdfs:comment "Something that was made by this agent." ; rdfs:domain foaf:Agent ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: ; owl:inverseOf foaf:maker . foaf:maker a rdf:Property, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "maker" ; rdfs:comment "An agent that made this thing." ; owl:equivalentProperty dc:creator ; rdfs:domain owl:Thing ; rdfs:range foaf:Agent ; rdfs:isDefinedBy foaf: ; owl:inverseOf foaf:made . foaf:img a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "image" ; rdfs:comment "An image that can be used to represent some thing (ie. those depictions which are particularly representative of something, eg. one's photo on a homepage)." ; rdfs:domain foaf:Person ; rdfs:range foaf:Image ; rdfs:subPropertyOf foaf:depiction ; rdfs:isDefinedBy foaf: . foaf:depiction a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "depiction" ; rdfs:comment "A depiction of some thing." ; rdfs:domain owl:Thing ; rdfs:range foaf:Image ; rdfs:isDefinedBy foaf: ; owl:inverseOf foaf:depicts . foaf:depicts a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "depicts" ; rdfs:comment "A thing depicted in this representation." ; rdfs:range owl:Thing ; rdfs:domain foaf:Image ; rdfs:isDefinedBy foaf: ; owl:inverseOf foaf:depiction . foaf:thumbnail a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "thumbnail" ; rdfs:comment "A derived thumbnail image." ; rdfs:domain foaf:Image ; rdfs:range foaf:Image ; rdfs:isDefinedBy foaf: . foaf:myersBriggs a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "myersBriggs" ; rdfs:comment "A Myers Briggs (MBTI) personality classification." ; rdfs:domain foaf:Person ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:workplaceHomepage a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "workplace homepage" ; rdfs:comment "A workplace homepage of some person; the homepage of an organization they work for." ; rdfs:domain foaf:Person ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:workInfoHomepage a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "work info homepage" ; rdfs:comment "A work info homepage of some person; a page about their work for some organization." ; rdfs:domain foaf:Person ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:schoolHomepage a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "schoolHomepage" ; rdfs:comment "A homepage of a school attended by the person." ; rdfs:domain foaf:Person ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:knows a rdf:Property, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "knows" ; rdfs:comment "A person known by this person (indicating some level of reciprocated interaction between the parties)." ; rdfs:domain foaf:Person ; rdfs:range foaf:Person ; rdfs:isDefinedBy foaf: . foaf:interest a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "interest" ; rdfs:comment "A page about a topic of interest to this person." ; rdfs:domain foaf:Agent ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:topic_interest a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "topic_interest" ; rdfs:comment "A thing of interest to this person." ; rdfs:domain foaf:Agent ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:publications a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "publications" ; rdfs:comment "A link to the publications of this person." ; rdfs:domain foaf:Person ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:currentProject a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "current project" ; rdfs:comment "A current project this person works on." ; rdfs:domain foaf:Person ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:pastProject a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "past project" ; rdfs:comment "A project this person has previously worked on." ; rdfs:domain foaf:Person ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:fundedBy a rdf:Property, owl:ObjectProperty ; ns0:term_status "archaic" ; rdfs:label "funded by" ; rdfs:comment "An organization funding a project or person." ; rdfs:domain owl:Thing ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:logo a rdf:Property, owl:ObjectProperty, owl:InverseFunctionalProperty ; ns0:term_status "testing" ; rdfs:label "logo" ; rdfs:comment "A logo representing some thing." ; rdfs:domain owl:Thing ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:topic a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "topic" ; rdfs:comment "A topic of some page or document." ; rdfs:domain foaf:Document ; rdfs:range owl:Thing ; owl:inverseOf foaf:page ; rdfs:isDefinedBy foaf: . foaf:primaryTopic a rdf:Property, owl:FunctionalProperty, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "primary topic" ; rdfs:comment "The primary topic of some page or document." ; rdfs:domain foaf:Document ; rdfs:range owl:Thing ; owl:inverseOf foaf:isPrimaryTopicOf ; rdfs:isDefinedBy foaf: . foaf:focus a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "focus" ; rdfs:comment "The underlying or 'focal' entity associated with some SKOS-described concept." ; rdfs:domain skos:Concept ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . skos:Concept rdfs:label "Concept" . foaf:isPrimaryTopicOf a rdf:Property, owl:InverseFunctionalProperty ; ns0:term_status "stable" ; rdfs:label "is primary topic of" ; rdfs:comment "A document that this thing is the primary topic of." ; rdfs:subPropertyOf foaf:page ; owl:inverseOf foaf:primaryTopic ; rdfs:domain owl:Thing ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:page a rdf:Property, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "page" ; rdfs:comment "A page or document about this thing." ; rdfs:domain owl:Thing ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: ; owl:inverseOf foaf:topic . foaf:theme a rdf:Property, owl:ObjectProperty ; ns0:term_status "archaic" ; rdfs:label "theme" ; rdfs:comment "A theme." ; rdfs:domain owl:Thing ; rdfs:range owl:Thing ; rdfs:isDefinedBy foaf: . foaf:account a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "account" ; rdfs:comment "Indicates an account held by this agent." ; rdfs:domain foaf:Agent ; rdfs:range foaf:OnlineAccount ; rdfs:isDefinedBy foaf: . foaf:holdsAccount a rdf:Property, owl:ObjectProperty ; ns0:term_status "archaic" ; rdfs:label "account" ; rdfs:comment "Indicates an account held by this agent." ; rdfs:domain foaf:Agent ; rdfs:range foaf:OnlineAccount ; rdfs:isDefinedBy foaf: . foaf:accountServiceHomepage a rdf:Property, owl:ObjectProperty ; ns0:term_status "testing" ; rdfs:label "account service homepage" ; rdfs:comment "Indicates a homepage of the service provide for this online account." ; rdfs:domain foaf:OnlineAccount ; rdfs:range foaf:Document ; rdfs:isDefinedBy foaf: . foaf:accountName a rdf:Property, owl:DatatypeProperty ; ns0:term_status "testing" ; rdfs:label "account name" ; rdfs:comment "Indicates the name (identifier) associated with this online account." ; rdfs:domain foaf:OnlineAccount ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:member a rdf:Property, owl:ObjectProperty ; ns0:term_status "stable" ; rdfs:label "member" ; rdfs:comment "Indicates a member of a Group" ; rdfs:domain foaf:Group ; rdfs:range foaf:Agent ; rdfs:isDefinedBy foaf: . foaf:membershipClass a rdf:Property, owl:AnnotationProperty ; ns0:term_status "unstable" ; rdfs:label "membershipClass" ; rdfs:comment "Indicates the class of individuals that are a member of a Group" ; rdfs:isDefinedBy foaf: . foaf:birthday a rdf:Property, owl:FunctionalProperty, owl:DatatypeProperty ; ns0:term_status "unstable" ; rdfs:label "birthday" ; rdfs:comment "The birthday of this Agent, represented in mm-dd string form, eg. '12-31'." ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:age a rdf:Property, owl:FunctionalProperty, owl:DatatypeProperty ; ns0:term_status "unstable" ; rdfs:label "age" ; rdfs:comment "The age in years of some agent." ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: . foaf:status a rdf:Property, owl:DatatypeProperty ; ns0:term_status "unstable" ; rdfs:label "status" ; rdfs:comment "A string expressing what the user is happy for the general public (normally) to know about their current activity." ; rdfs:domain foaf:Agent ; rdfs:range rdfs:Literal ; rdfs:isDefinedBy foaf: .