what is the {start time} for {Gerd Müller} has {member of sports team} as {Germany national under-23 football team} ?
In what year was Gerd Muller a play on the 23 and under German football team?
When was Gerd Muller a member of the German under-23 football team?
SELECT ?m WHERE { ?i property:start_time ?m . resource:Gerd_Müller property:member_of_sports_team ?i . ?i property:member_of_sports_team resource:Germany_national_under-23_football_team }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q43744> .
?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/Q1202768> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q43744 p:P54 ?s . ?s ps:P54 wd:Q1202768 . ?s pq:P580 ?value}