What is {member of sports team} of {Juan Alberto Schiaffino} that is {start time} is {1960-1-1} ?
Which of Juan Alberto Schiaffino's teammates was born on 1/1/1960?
Which one of Juan Alberto Schiaffino's team mates was bone on 1960-1-1?
SELECT ?a WHERE { ?e property:start_time ?i . FILTER ( CONTAINS ( YEAR ( ?i ) , '1960' ) ) . ?e property:member_of_sports_team ?a . resource:Juan_Alberto_Schiaffino property:member_of_sports_team ?e }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q332064> .
?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> <1960-1-1>
} 

SELECT ?obj WHERE { wd:Q332064 p:P54 ?s . ?s ps:P54 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1960')) }