What is {member of sports team} of {Jack Kramer} and {start time}
Which sports group did Jack Kramer connect and when?
Which sports team did Jack Kramer join and when?
SELECT ?o ?h WHERE { ?r property:start_time ?o . . ?r property:member_of_sports_team ?h . resource:Jack_Kramer property:member_of_sports_team ?r }
select distinct ?dataprop1 ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q54529> . ?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/P580> ?dataprop1 . } 
SELECT ?value1 ?obj WHERE { wd:Q54529 p:P54 ?s . ?s ps:P54 ?obj . ?s pq:P580 ?value1 . }