query: SELECT ?idWD ?idWDLabel
          (MAX(?indirizzo) as ?indirizzo)
          (MAX(?coord) as ?coord)
          (MAX(?commons) as ?commons)
      WHERE {
          ?idWD wdt:P131 wd:Q13364 .
          OPTIONAL { ?idWD wdt:P969 ?indirizzo . }
          OPTIONAL { ?idWD wdt:P625 ?coord . }
          OPTIONAL { ?idWD wdt:P373 ?commons . }
  
          ?idWD wdt:P1435 wd:Q26971668 .
          SERVICE wikibase:label { bd:serviceParam wikibase:language "it,en". }
      }
      GROUP BY ?idWD ?idWDLabel