Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Input: Consider Input: The Bob Dylan songs 'Desolation Row', 'Tombstone Blues' and 'Like A Rolling Stone' featured on which album?

Output: tombstone blues


Input: Consider Input: Although it was headquartered at Oak Ridge, TN, and the University of Chicago, what was the name of the WWII project that created the atomic bomb?

Output: nuclear weapon


Input: Consider Input: Which city has sports teams known as the 'Maple Leafs' and the 'Blue Jays'?


Output: toronto blue jays