Take the following as truth: Named after the hill on which it stands and which in the Middle Ages was surrounded by a malarial swamp, the Vatican has been a papal residence for over 600 years, but a sovereign state independent of Italy only since the Lateran Treaty signed by Mussolini in 1929.
Then the following statement: "In 1929, Mussolini signed the Lateran Treaty in the presence of five witnesses. " is true, false, or inconclusive?