query: SELECT DISTINCT ?item ?itemLabel ?typeLabel ?artistaDescription ?anno
  WHERE
  {
      ?item wdt:P31/wdt:P279* wd:Q482994.
      ?item wdt:P175 ?artista .
      ?artista wdt:P31 ?type.
      ?item wdt:P577 ?date .
      BIND (YEAR(?date) as ?anno).
  	OPTIONAL { ?item schema:description ?itemDescription  }
  	FILTER (!BOUND(?itemDescription))
    
  	SERVICE wikibase:label { bd:serviceParam wikibase:language "it"}
  }