query: SELECT DISTINCT ?item ?anno
  WHERE
  {
      ?item wdt:P31 wd:Q13442814.
      ?item wdt:P577 ?date .
      ?item wdt:P1433 ?pubb.
      BIND (YEAR(?date) as ?anno).
      OPTIONAL { ?item schema:description ?itemDescription  }
      FILTER (!BOUND(?itemDescription))
      SERVICE wikibase:label { bd:serviceParam wikibase:language "it"}
  } LIMIT 250