What is <volume> of <The Origin of Chemical Elements> ?
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which means {volume }in {The Origin of Chemical Elements} ?
SELECT DISTINCT ?i WHERE { resource:Alpher–Bethe–Gamow_theory property:volume ?i }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2166490> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P478> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q2166490 wdt:P478 ?answer}