What is <introduced feature> of <air conditioning> ?
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Which is the introduced feature for air conditioning?
SELECT DISTINCT ?l WHERE { ?l property:introduced_feature resource:air_conditioning }
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/P751> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q173725>. }
select distinct ?answer where { ?answer wdt:P751 wd:Q173725}
Piper PA-31 Navajo B