What is the {languoid class} for {studied by} of {linguistics}
What language groups are studied by linguistics?
Which language families are studied by linguistics?
SELECT DISTINCT ?k WHERE { ?k property:studied_by resource:linguistics . ?k rdf:type ontology:languoid_class }
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/P2579> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q8162> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q28923954> } 
 select distinct ?sbj where { ?sbj wdt:P2579 wd:Q8162 . ?sbj wdt:P31 wd:Q28923954 } 
languoid language language family dialect language