what is the {point in time} for {Romário} has {award received} as {World Cup Golden Ball} ?
When was the World Cup Golden Ball given to Romario?
When did Romario receive the World Cup Golden Ball?
SELECT ?x WHERE { ?s property:award_received resource:World_Cup_Golden_Ball . resource:Romário property:award_received ?s . ?s property:point_in_time ?x }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q178649> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P166> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q17355204> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q178649 p:P166 ?s . ?s ps:P166 wd:Q17355204 . ?s pq:P585 ?value}