query: SELECT ?item (SAMPLE(COALESCE(?en_label, ?item_label)) as ?label)
  WHERE {
    ?item p:P31/ps:P31 wd:Q10943.  # Instance of cheese
    MINUS {?item wdt:P279 ?class.} # But not subclass of anything
    OPTIONAL {?item rdfs:label ?en_label . FILTER(LANG(?en_label) = "en")}
  } GROUP BY ?item