What is {cast member} of {Halloween} that is {character role} is {Michael Myers} ?
What actor plays the character Michael Myers in the movie Halloween?
Who plays the character Michael Myers in the movie Halloween?
SELECT ?r WHERE { ?q property:cast_member ?r . ?q property:character_role resource:Michael_Myers . resource:Halloween property:cast_member ?q }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q221103> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P161> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P453> <http://wikidata.dbpedia.org/resource/Q1426891>
} 

SELECT ?obj WHERE { wd:Q221103 p:P161 ?s . ?s ps:P161 ?obj . ?s pq:P453 wd:Q1426891 }