Question: In addition to Prince George, whom helped inaugurate the London Museum?   
Sentence (from "Prince George, Duke of Kent"): Prince George, Duke of Kent, {'1': ", '2': ", '3': ", '4': "} (George Edward Alexander Edmund; 20 December 1902 – 25 August 1942) was the fourth son of George V of the United Kingdom and Queen Mary.
Relevant evidence: Yes