query: #Cats
  SELECT ?item ?itemLabel ?seat ?seatLabel WHERE {
    ?item p:P3602 ?stat.
    ?stat ps:P3602 wd:Q48771246.
    OPTIONAL { ?stat pq:P768 ?seat. }
    
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }