@prefix rdf: . @prefix ns1: . @prefix frbr: . ns1:work rdf:type frbr:Work . @prefix xsd: . @prefix dc: . ns1:work dc:date "2004-06-01"^^xsd:date . @prefix ns5: . ns1:work frbr:subject ns5:documento-legislativo ; frbr:realization . @prefix ns6: . ns1:work frbr:creator ns6:senado .