What is <speed of sound> of <helium> ?
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Which is the speed of sound for helium?
SELECT DISTINCT ?n WHERE { resource:helium property:speed_of_sound ?n }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q560> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2075> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q560 wdt:P2075 ?answer}
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