What is the {anion} for {conjugate base} of {sulfate ion}
Who is the {anion} for {conjugate base} of {sulfate particle}
Who is the {anion} for {conjugate base} of {sulfate ion}
SELECT DISTINCT ?m WHERE { ?m property:conjugate_base resource:sulfate_ion . ?m rdf:type ontology:anion }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4149> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q172290> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q107968> } 
 select distinct ?sbj where { ?sbj wdt:P4149 wd:Q172290 . ?sbj wdt:P31 wd:Q107968 } 