What is the {essential medicine} for {drug used for treatment} of {skin cancer}
Which is the basic medication within the medicate utilized for treatment of skin cancer?
Which is the essential medicine in the drug used for treatment of skin cancer?
SELECT DISTINCT ?s WHERE { ?s rdf:type ontology:essential_medicine . resource:skin_cancer property:drug_used_for_treatment ?s }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q192102> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2176> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q35456> } 
 select distinct ?obj where { wd:Q192102 wdt:P2176 ?obj . ?obj wdt:P31 wd:Q35456 } 
fluorouracil