query: SELECT DISTINCT ?item ?image WHERE {
    ?item wdt:P17 wd:Q38 .
    ?item wdt:P2186 ?wlmid .
    ?item wdt:P373 ?commons .
    MINUS { ?item wdt:P18 ?image } .
    BIND(CONCAT('"Wiki Loves Monuments Italia" insource:', ?wlmid) AS ?needle ) .
    SERVICE wikibase:mwapi {
        bd:serviceParam wikibase:endpoint "commons.wikimedia.org" .
        bd:serviceParam wikibase:api "Search" .
        bd:serviceParam mwapi:srnamespace "6" .
        bd:serviceParam mwapi:srsearch ?needle .
        bd:serviceParam mwapi:srlimit "1" .
        ?image wikibase:apiOutput mwapi:title .
      }
  }
  LIMIT 100