what is the {start time} for {Brazil} has {currency} as {cruzeiro} ?
The Cruzeiro, the currency of Brazil, was established when?
When did the cruzeiro become the currency of Brazil?
SELECT ?h WHERE { ?i property:start_time ?h . resource:Brazil property:currency ?i . ?i property:currency resource:cruzeiro }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q155> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P38> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q8351983> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q155 p:P38 ?s . ?s ps:P38 wd:Q8351983 . ?s pq:P580 ?value}