What is {inception} of {Madama Butterfly} that is {start time} is {1901-0-0} ?
Which date is the origin of Madama Butterfly in 1901-0-0?
What was the inception date of Madama Butterfly in 1901-0-0?
SELECT ?h WHERE { resource:Madama_Butterfly property:inception ?q . ?q property:start_time ?b . ?q property:inception ?h . FILTER ( CONTAINS ( YEAR ( ?b ) , '1901' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q19005> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P571> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1901-0-0>
} 

SELECT ?obj WHERE { wd:Q19005 p:P571 ?s . ?s ps:P571 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1901')) }