References of Bio2rdf, comment and evidence code based on a term

Database: 
Statement: 

Display references of Bio2rdf, Comment and Evidence code based on a matabolite, pathway or enzyme $mpe$. Display a maximum of $number$ (eg.100) results.

Query: 
select distinct ?References_Bio2RDF ?comment ?evidence_code where { ?s<http://www.w3.org/1999/02/22-rdf-syntax-ns#type><http://www.biopax.org/release/biopax-level3.owl#Evidence> . ?s<http://www.biopax.org/release/biopax-level3.owl#xref>?References_Bio2RDF . ?s<http://www.biopax.org/release/biopax-level3.owl#comment>?comment . ?s<http://www.biopax.org/release/biopax-level3.owl#evidenceCode>?evidence_code . ?comment bif:contains "'??mpe'" . } Limit ??number