Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: What was the name of the British India Special Force, the brainchild of British Brigadier Orde Charles Wingate, that operated behind Japanese lines in Burma & India in 1943/1944 during World War II?

Answer: orde wingate

Question: Which Beatle played Youngman Grand in The Magic Christian 1969, with Peter Sellers?

Answer: the beatles

Question: Who was Abraham Lincoln's vice president when he was assassinated?

Answer:
abraham lincoln