<http://identifiers.org/obo.go/GO:0019031> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.biopax.org/release/biopax-level3.owl#CellularLocationVocabulary> .
<http://identifiers.org/obo.go/GO:0019031> <http://www.biopax.org/release/biopax-level3.owl#xref> <urn:biopax:UnificationXref:GENE+ONTOLOGY_GO%3A0019031> .
<http://identifiers.org/obo.go/GO:0019031> <http://www.biopax.org/release/biopax-level3.owl#term> "viral envelope"^^<http://www.w3.org/2001/XMLSchema#string> .