@prefix rdf: . @prefix ecrm: . rdf:type ecrm:E21_Person . @prefix rdfs: . rdfs:label "Joao Correia da Silva" . @prefix owl: . owl:sameAs , . @prefix foaf: . foaf:name "Joao Correia da Silva" ; foaf:firstName "Joao" ; ecrm:P131_is_identified_by "Correia da Silva, Joao" ; foaf:surname "Correia da Silva" .