what is the {start time} for {Allen Iverson} has {member of sports team} as {Philadelphia 76ers} ?
At what time did Allen Iverson begin playing for the Philadelphia 76ers?
When did Allen Iverson begin playing for the Philadelphia 76ers?
SELECT ?e WHERE { ?v property:member_of_sports_team resource:Philadelphia_76ers . ?v property:start_time ?e . resource:Allen_Iverson property:member_of_sports_team ?v }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q190094> .
?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> <http://wikidata.dbpedia.org/resource/Q138089> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q190094 p:P54 ?s . ?s ps:P54 wd:Q138089 . ?s pq:P580 ?value}