What is the {human} for {cover artist} of {All Quiet on the Western Front}
Who's the silent cover artist on the western front?
who  is the cover artist of all quiet on the western front?
SELECT DISTINCT ?t WHERE { resource:All_Quiet_on_the_Western_Front property:cover_art_by ?t . ?t rdf:type ontology:human }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q207332> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P736> . ?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/Q5> } 
 select distinct ?obj where { wd:Q207332 wdt:P736 ?obj . ?obj wdt:P31 wd:Q5 } 