What is <time of spacecraft launch> of <Sputnik 1> ?
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which time spacecraft launch of sputnik 1?
SELECT DISTINCT ?r WHERE { resource:Sputnik_1 property:UTC_date_of_spacecraft_launch ?r }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q80811> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P619> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q80811 wdt:P619 ?answer}
1957-10-04T00:00:00Z