<?xml version="1.0"?> <!DOCTYPE rdf:RDF [ <!ENTITY ex "http://example.com/"> <!ENTITY w3 "http://www.w3.org"> <!ENTITY rdf "&w3;/1999/02/22-rdf-syntax-ns#"> <!ENTITY rdfs "&w3;/2000/01/rdf-schema#"> <!ENTITY xsd "&w3;/2001/XMLSchema#"> ]> <rdf:RDF xmlns:ex2="&ex;2/" xmlns:rdf="&rdf;"> <rdf:Description rdf:about="&ex;foo"> <ex2:test rdf:datatype="&xsd;string">bar</ex2:test> </rdf:Description> </rdf:RDF>