<?xml version="1.0"?>
 <rdf:RDF 
 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
 xmlns:kendrabase="http://www.kendra.org.uk/ontology/">
 <rdf:Description rdf:about="kendrabase:pipe_work"> <kendrabase:has_property>kendrabase:material</kendrabase:has_property></rdf:Description>
 <rdf:Description rdf:about="kendrabase:pipe_work"> <kendrabase:has_property>kendrabase:length</kendrabase:has_property></rdf:Description>
 <rdf:Description rdf:about="kendrabase:pipe_work"> <kendrabase:has_property>kendrabase:diameter</kendrabase:has_property></rdf:Description>
 <rdf:Description rdf:about="kendrabase:pipe_work"> <kendrabase:has_property>kendrabase:colour</kendrabase:has_property></rdf:Description>
 </rdf:RDF>