@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix : <http://semanticscience.org/ontology/sio.owl#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix oboInOwl: <http://www.geneontology.org/formats/oboInOwl#> .
@prefix resource: <http://semanticscience.org/resource/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix obo: <http://purl.obolibrary.org/obo/> .
@prefix ns4: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .

dc:identifier
    a owl:AnnotationProperty .

ns4:alternative
    a owl:AnnotationProperty .

ns4:description
    a owl:AnnotationProperty .

<http://semanticscience.org/ontology/sio.owl>
    a owl:Ontology .

resource:SIO_000300
    a owl:DatatypeProperty, owl:FunctionalProperty ;
    rdfs:label "has value"@en .

resource:SIO_000731
    a owl:Class ;
    rdfs:label "informational entity identifier"@en .

resource:SIO_000811
    dc:identifier "SIO_000811" ;
    ns4:alternative "Uniform Resource Locator"@en ;
    ns4:description "A Uniform Resource Locator or Universal Resource Locator (URL) is a specific character string that constitutes a reference to an Internet resource."@en ;
    a owl:Class ;
    rdfs:isDefinedBy <http://semanticscience.org/ontology/sio.owl> ;
    rdfs:label "URL"@en ;
    rdfs:subClassOf resource:SIO_000731, [
        a owl:Restriction ;
        owl:onProperty resource:SIO_000300 ;
        owl:someValuesFrom xsd:anyURI
    ] .