query: SELECT ?item ?itemLabel ?should_link_via_P921_to ?should_link_via_P921_toLabel WHERE { ?should_link_via_P921_to wdt:31 ?item FILTER NOT EXISTS { ?item wdt:P921 ?should_link_via_P921_to } SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE], en" } }