What is <conjugate acid> of <nitric acid> ?
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Which is the conjugate acid for nitric acid?
SELECT DISTINCT ?l WHERE { ?l property:conjugate_acid resource:nitric_acid }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject>  ?answer. ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4147> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q83320>. }
select distinct ?answer where { ?answer wdt:P4147 wd:Q83320}
nitrate ion