All articles related to introduced term

Database: 
Statement: 

All articles related to an introduced term $label$.
Display a limit of results $number$

Query: 
select ?label where{ ?Pubmed<http://www.w3.org/1999/02/22-rdf-syntax-ns#type><http://bio2rdf.org/pubmed_vocabulary:PubMedRecord> . ?Pubmed<http://www.w3.org/2000/01/rdf-schema#label>?label . FILTER regex(?label, "??label", "i") } Limit ??number