What is {member of sports team} of {George Mikan} that is {position played on team / speciality} is {center} ?
Who is the center on George Mikan's team?
What is member of the sports team  of George Mikan  that is position played on the team / specialty is  center ?
SELECT ?u WHERE { ?h property:position_played_on_team_/_speciality resource:center . ?h property:member_of_sports_team ?u . resource:George_Mikan property:member_of_sports_team ?h }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q314185> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P54> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P413> <http://wikidata.dbpedia.org/resource/Q222052>
} 

SELECT ?obj WHERE { wd:Q314185 p:P54 ?s . ?s ps:P54 ?obj . ?s pq:P413 wd:Q222052 }