instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In which 1960's TV series did Clarence the cross-eyed lion appear?
answer:
clarence, the cross-eyed lion

question:
The Battle of Poltava in 1709 was a victory by Peter the Great over which state?
answer:
battle of poltava

question:
Who immediately succeeded Abraham Lincoln as President?
answer:
abraham lincoln