@prefix rdf: . @prefix ecrm: . rdf:type ecrm:E21_Person . @prefix rdfs: . rdfs:label "Boris Tchaikovski" . @prefix foaf: . foaf:name "Boris Tchaikovski" . @prefix dc: . dc:identifier "20107983" ; foaf:firstName "Boris" ; ecrm:P131_is_identified_by "Tchaikovski, Boris" ; foaf:surname "Tchaikovski" .