query: SELECT ?item ?itemLabel ?NazLabel ?itemDescription WHERE {
    ?item wdt:P31/wdt:P279* wd:Q215380.
    ?item wdt:P495 ?Naz.
    SERVICE wikibase:label { bd:serviceParam wikibase:language "it" }
    
    OPTIONAL { ?item schema:description ?itemDescription  }
  	FILTER (!BOUND(?itemDescription))
  }