What is the {conversation} for {used by} of {human}
Do people utilize conversation?
Do humans use conversation?
SELECT DISTINCT ?v WHERE { ?v rdf:type ontology:conversation . ?v property:used_by resource:human }
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/P1535> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q5> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q52943> } 
 select distinct ?sbj where { ?sbj wdt:P1535 wd:Q5 . ?sbj wdt:P31 wd:Q52943 } 