@prefix dcterms: <http://purl.org/dc/terms/>.
@prefix foaf: <http://xmlns.com/foaf/0.1/>.
@prefix wdrs: <http://www.w3.org/2007/05/powder-s#>.
@prefix owl: <http://www.w3.org/2002/07/owl#>.
@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.
@prefix gr: <http://purl.org/goodrelations/v1#>.
@prefix xml: <http://www.w3.org/XML/1998/namespace>.
@prefix vcard: <http://www.w3.org/2006/vcard/ns#>.
@prefix dc: <http://purl.org/dc/elements/1.1/>.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix pto: <http://www.productontology.org/id/>.
@prefix schema: <http://schema.org/>.


# OWL DL work-arounds (instead of imports)
dc:contributor a owl:AnnotationProperty.
dc:creator a owl:AnnotationProperty.
dc:rights a owl:AnnotationProperty.
dc:subject a owl:AnnotationProperty.
dc:title a owl:AnnotationProperty.
dcterms:license a owl:AnnotationProperty.
wdrs:describedby a owl:AnnotationProperty.
foaf:Document a owl:Class.
foaf:homepage a owl:AnnotationProperty.
foaf:page a owl:AnnotationProperty.
foaf:primaryTopic a owl:AnnotationProperty.
schema:Product a owl:Class.


#OWL 1 DL compatibility of the OWL2 deprecated property
owl:deprecated a owl:AnnotationProperty.

<http://www.productontology.org/#> 	a owl:Ontology;
	dc:title "PTO: The Product Types Ontology for Semantic Web-based E-Commerce"@en;
	rdfs:comment """The Product Types Ontology: Good identifiers for product types based on Wikipedia

This service provides GoodRelations-compatible class definitions for any type of product or service that has an entry in the English Wikipedia.

Vocabulary:    http://www.productontology.org/#
Namespace:     http://www.productontology.org/

The Product Types Ontology is designed to be used in combination with GoodRelations, a standard vocabulary for the commercial aspects of offers.

See http://purl.org/goodrelations/ for more information."""@en;
	rdfs:label "The Product Types Ontology for Semantic Web-based E-Commerce"@en;
	dc:contributor "The class abstracts and translations of labels are taken from Wikipedia, the free encyclopedia."@en;
	dc:creator "Martin Hepp"@en;
	dc:rights "The class definition texts are taken from Wikipedia, the free encyclopedia under a Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license, see http://creativecommons.org/licenses/by-sa/3.0/. Accordingly, all ontology class definitions provided in here are available under the very same license."@en;
	dc:subject "E-Commerce, E-Business, GoodRelations, Ontology, Wikipedia, DBPedia"@en;
	dcterms:license <http://creativecommons.org/licenses/by-sa/3.0/>;
	rdfs:seeAlso <http://purl.org/goodrelations/v1>;
	owl:imports <http://purl.org/goodrelations/v1>;
	owl:versionInfo "2026-10-29T19:49:45.368720".

<http://www.productontology.org/> a foaf:Document;
	foaf:primaryTopic <http://www.productontology.org/#>.

<http://www.productontology.org/doc/Open_Graph_protocol.rdf> a foaf:Document;
	foaf:primaryTopic <http://www.productontology.org/id/Open_Graph_protocol>.
<http://www.productontology.org/doc/Open_Graph_protocol.ttl> a foaf:Document;
	foaf:primaryTopic <http://www.productontology.org/id/Open_Graph_protocol>.
<http://www.productontology.org/doc/Open_Graph_protocol> a foaf:Document;
	foaf:primaryTopic <http://www.productontology.org/id/Open_Graph_protocol>.
	
<http://www.productontology.org/id/Open_Graph_protocol> a owl:Class;
	rdfs:subClassOf gr:ProductOrService, schema:Product;
	rdfs:label "Open Graph protocol"@en;
	rdfs:comment """The Open Graph Protocol is a specialized web page protocol used between client devices (computers, mobile phones, tablets, etc.). The protocol was initially designed for Facebook to enable developers to integrate their pages into Facebook&#39;s global mapping/tracking tool Social Graph. These pages gain the functionality of other graph objects including profile links and stream updates for connected users.
In recent years the protocol gained wide spread use and also was integrated into functionality in major messaging apps. The protocol utilized in messaging apps such as iMessage adds the functionality whereby if a user shares a URL, the corresponding Open Graph metadata of the URL will allow for the display of the thumbnail or assigned image as part of the link. 

(Source: Wikipedia, the free encyclopedia, see http://en.wikipedia.org/wiki/Open_Graph_protocol)"""@en;
	rdfs:isDefinedBy <http://www.productontology.org/#>;
	rdfs:label "Open Graph protocol"@de; 
	rdfs:label "Open Graph protokol"@sr; 

	rdfs:seeAlso <http://www.productontology.org/>,
		<http://dbpedia.org/resource/Open_Graph_protocol>,
		<http://www.productontology.org/doc/Open_Graph_protocol>;

	wdrs:describedby <http://www.productontology.org/doc/Open_Graph_protocol.rdf>, <http://www.productontology.org/doc/Open_Graph_protocol.ttl>;
	foaf:homepage <http://www.productontology.org/doc/Open_Graph_protocol.html>;
	foaf:page <http://en.wikipedia.org/wiki/Open_Graph_protocol>.