What is the {free and open-source software} for {named after} of {Linux}
Which is the free and open-source computer program that's named after Linux?
Which is the free and open-source software that is named after Linux?
SELECT DISTINCT ?f WHERE { ?f rdf:type ontology:free_and_open-source_software . resource:Linux property:named_after ?f }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q388> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P138> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q506883> } 
 select distinct ?obj where { wd:Q388 wdt:P138 ?obj . ?obj wdt:P31 wd:Q506883 } 
Linux kernel