<?xml version="1.0"?><!DOCTYPE rdf:RDF [<!ENTITY vin  "http://www.w3.org/TR/2003/PR-owl-guide-20031209/wine#" ><!ENTITY food "http://www.w3.org/TR/2003/PR-owl-guide-20031209/food#" ><!ENTITY owl  "http://www.w3.org/2002/07/owl#" ><!ENTITY xsd  "http://www.w3.org/2001/XMLSchema#" >]><rdf:RDF xmlns     = "http://www.w3.org/TR/2003/PR-owl-guide-20031209/wine#" xmlns:vin = "http://www.w3.org/TR/2003/PR-owl-guide-20031209/wine#" xml:base  = "http://www.w3.org/TR/2003/PR-owl-guide-20031209/wine#" xmlns:food= "http://www.w3.org/TR/2003/PR-owl-guide-20031209/food#" xmlns:owl = "http://www.w3.org/2002/07/owl#" xmlns:rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs= "http://www.w3.org/2000/01/rdf-schema#" xmlns:xsd = "http://www.w3.org/2001/XMLSchema#"><owl:Ontology rdf:about=""><rdfs:comment>An example OWL ontology</rdfs:comment><rdfs:label>Wine Ontology</rdfs:label></owl:Ontology><owl:Class rdf:ID="VintageYear" /><owl:DatatypeProperty rdf:ID="yearValue"><rdfs:domain rdf:resource="#VintageYear" />    <rdfs:range  rdf:resource="&xsd;positiveInteger" /></owl:DatatypeProperty></rdf:RDF>