query: SELECT DISTINCT ?item ?itemLabel ?dissolved ?merger ?mergerLabel ?inception WHERE {
    # "merged into" (P7888) being used for entities that did not exist previously.
    ?item wdt:P7888 ?merger.
    ?item wdt:P576 ?dissolved.
    ?merger wdt:P571 ?inception.
    FILTER(?dissolved <= ?inception)
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }