Display all drug-drug associations stored in pharmgkb database according to an introduced drug

Database: 
Statement: 

Display all drug-drug associations stored pharmgkb database according to an introduced drug $term$ (e.g., acetaminophen ). A limit of results per page $number$ (e.g. 100).

Query: 
select* where{ ?DrugDrugAssociation a <http://bio2rdf.org/pharmgkb_vocabulary:drug-drug-Association> . ?DrugDrugAssociation<http://www.w3.org/2000/01/rdf-schema#label>?label . FILTER regex(?label, "??term", "i") } limit ??number