query: SELECT ?item ?itemLabel ?located ?locatedLabel ?om WHERE {
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    {?item wdt:P31 wd:Q55043} UNION {?item wdt:P31 wd:Q9826} UNION {?item wdt:P31 wd:Q322563}  UNION {?item wdt:P31 wd:Q2897316}.
    ?item wdt:P17 wd:Q28.
    FILTER NOT EXISTS{ ?item wdt:P576 [] }
    OPTIONAL { ?item wdt:P131 ?located. }
    OPTIONAL { ?item wdt:P2493 ?om. }
  }