query: SELECT ?item ?itemLabel ?itemDescription ?n 
  {
      ?item wdt:P735 wd:Q4925477 ; wdt:P31 wd:Q5 .
      BIND(ROUND(xsd:integer(strafter(str(?item),"y/Q"))/1000000) as ?n)
      FILTER(?n = 6)
      SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }