query: SELECT DISTINCT ?item ?itemLabel ?start ?end ?date WHERE {
    ?item wdt:P131* wd:Q38. 
    ?item p:P2186 ?wlmst .
    ?wlmst pq:P585 ?date .
    { ?wlmst pq:P580 ?start } UNION { ?wlmst pq:P582 ?end }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],it". }
  }
  