Get all those genes related to a dietary restriction life

Statement: 
Get all those genes related to a dietary restriction life.
A limit of results per page $number$ (e.g. 10)
Query: 
select* where{ ?s<http://www.w3.org/1999/02/22-rdf-syntax-ns#type><http://bio2rdf.org/gendr_vocabulary:Dietary-Restriction-Life-Extension-Related-Gene> . OPTIONAL{ ?s<http://purl.org/dc/terms/identifier>?identifier . ?s<http://bio2rdf.org/gendr_vocabulary:x-ncbigene>?ncbigene . ?s<http://bio2rdf.org/gendr_vocabulary:article>?article . } } limit ??number
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