What is the {dead language} for {writing system} of {Egyptian hieroglyphs}
Egyptian hieroglyphs were a writing system for which dead language?
 select distinct ?sbj where { ?sbj wdt:P282 wd:Q132659 . ?sbj wdt:P31 wd:Q45762 } 
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/P282> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q132659> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q45762> } 
Which dead language were Egyption hieroglyphs for?