OWL, aka One World Language, is a xml format created in 2004.
#304on PLDB | 20Years Old | 199Repos |
The Web Ontology Language (OWL) is a family of knowledge representation languages for authoring ontologies. Ontologies are a formal way to describe taxonomies and classification networks, essentially defining the structure of knowledge for various domains: the nouns representing classes of objects and the verbs representing relations between the objects. Ontologies resemble class hierarchies in object-oriented programming but there are several critical differences. Read more on Wikipedia...
<?xml version="1.0"?>
<!DOCTYPE rdf:RDF [
<!ENTITY owl "http://www.w3.org/2002/07/owl#" >
<!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
<!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
<!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
]>
<rdf:RDF xmlns="http://www.co-ode.org/ontologies/pizza/pizza.owl#"
xml:base="http://www.co-ode.org/ontologies/pizza/pizza.owl"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:owl="http://www.w3.org/2002/07/owl#">
<owl:Ontology rdf:about="">
<owl:versionInfo xml:lang="en"
>v.1.4. Added Food class (used in domain/range of hasIngredient), Added several hasCountryOfOrigin restrictions on pizzas, Made hasTopping invers functional</owl:versionInfo>
<owl:versionInfo rdf:datatype="&xsd;string">version 1.5</owl:versionInfo>
<owl:versionInfo xml:lang="en"
>v.1.5. Removed protege.owl import and references. Made ontology URI date-independent</owl:versionInfo>
<rdfs:comment xml:lang="en"
>An example ontology that contains all constructs required for the various versions of the Pizza Tutorial run by Manchester University (see http://www.co-ode.org/resources/tutorials/)</rdfs:comment>
</owl:Ontology>
<!--
///////////////////////////////////////////////////////////////////////////
//
// OWL Classes
//
///////////////////////////////////////////////////////////////////////////
-->
<!-- Class: http://www.co-ode.org/ontologies/pizza/pizza.owl#American -->
<owl:Class rdf:about="#American">
<rdfs:label xml:lang="pt">Americana</rdfs:label>
<rdfs:subClassOf>
<owl:Restriction>
<owl:onProperty rdf:resource="#hasTopping"/>
<owl:someValuesFrom rdf:resource="#TomatoTopping"/>
</owl:Re
<http://example.org/tea.owl> rdf:type owl:Ontology .
:Tea rdf:type owl:Class .
Feature | Supported | Example | Token |
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Line Comments | X |