Did {Caffeine} {subject has role} {stimulant} and {PDE3 inhibitor} ?
Does Caffeine play a role as a stimulant and PDE3 inhibitor?
Did Caffeine subject has role stimulant and PDE3 inhibitor ?
ASK WHERE { resource:caffeine property:subject_has_role resource:stimulant . resource:caffeine property:subject_has_role resource:PDE3_inhibitor }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q60235> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2868> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q211036>. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q60235> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2868> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q2043933>. } 
ASK WHERE { wd:Q60235 wdt:P2868 wd:Q211036 . wd:Q60235 wdt:P2868 wd:Q2043933 }