query: SELECT ?item ?itemlabel ?part_of ?subclass_of WHERE {
    ?item wdt:P31 wd:Q2465832.
    OPTIONAL { ?item wdt:P361 ?part_of. }
    OPTIONAL { ?item wdt:P279 ?subclass_of. }
    OPTIONAL { ?item rdfs:label ?itemlabel filter (lang(?itemlabel) = "en") .}
  }