<?xml version="1.0"?>

<!DOCTYPE rdf:RDF [
    <!ENTITY eg   'urn:x-hp:eg/'>
    <!ENTITY rdf  'http://www.w3.org/1999/02/22-rdf-syntax-ns#'>
    <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'>
    <!ENTITY xsd  'http://www.w3.org/2001/XMLSchema#'>
]>

<rdf:RDF xmlns:rdf="&rdf;" xmlns:rdfs="&rdfs;" xmlns:xsd="&xsd;"
         xml:base="urn:x-hp:eg/" xmlns="&eg;">

  <Teenager rdf:about="&eg;colin">
      <mum rdf:resource="&eg;rosy" />
      <age>13</age>
<!--      <age rdf:datatype="&xsd;int">13</age>  -->
  </Teenager>

</rdf:RDF>
