query: SELECT ?grouping (COUNT(DISTINCT ?entity) as ?count) (SAMPLE(?entity) as ?sample) WHERE { ?entity wdt:P31 wd:Q5; wdt:P485 wd:Q7060392  
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }. ?entity wdt:P21 ?grouping .} GROUP BY ?grouping HAVING (?count < 0) ORDER BY DESC(?count) LIMIT 1000