PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

PREFIX ex: <http://www.example.org/>
PREFIX bp: <http://www.biopax.org/release/biopax-level3.owl#>
PREFIX ensembl: <http://rdf.ebi.ac.uk/resource/ensembl/>

ex:gene1 rdf:type bp:Gene .
ex:gene1 rdfs:label "Gene1" .
ex:gene1 ex:similar_to ensembl:ENSG00000171105 .