<http://identifiers.org/pubmed/18615587> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.biopax.org/release/biopax-level3.owl#PublicationXref> .
<http://identifiers.org/pubmed/18615587> <http://www.biopax.org/release/biopax-level3.owl#db> "PubMed"^^<http://www.w3.org/2001/XMLSchema#string> .
<http://identifiers.org/pubmed/18615587> <http://www.biopax.org/release/biopax-level3.owl#id> "18615587"^^<http://www.w3.org/2001/XMLSchema#string> .