query: SELECT ?item ?itemLabel ?BWF WHERE {
     ?item wdt:P106 wd:Q13141064; wdt:P2729 ?BWF .
     FILTER EXISTS { ?item wdt:P3620 ?dummy0 }
     FILTER NOT EXISTS { ?item wdt:P2729 ?dummy0 }
     SERVICE wikibase:label {
       bd:serviceParam wikibase:language "en" .
     }
   }
  ORDER BY ?BWF