query: SELECT ?entity ?entityLabel ?entityDescription 
  WHERE
  {
    ?entity wdt:P31 wd:Q5; wdt:P166 wd:Q1316544  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". } . 
    MINUS { ?entity wdt:P166 []; wdt:P31 wd:Q5; wdt:P166 wd:Q1316544  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }  } 
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en" }
  }
  LIMIT 1000