What is {performer} of {Red Skull} that is {of} is {Captain America} ?
Which player played Red Skull in Captain America?
Who played Red Skull in Captain America?
SELECT ?c WHERE { resource:Red_Skull property:performer ?x . ?x property:of resource:Captain_America . ?x property:performer ?c }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2034529> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P175> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P642> <http://wikidata.dbpedia.org/resource/Q1035093>
} 

SELECT ?obj WHERE { wd:Q2034529 p:P175 ?s . ?s ps:P175 ?obj . ?s pq:P642 wd:Q1035093 }