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: Name Shakespeare play Ariel, Miranda and Prospero appear?

Output: ariel


Input: Consider Input: Which author wrote The Bourne Identity?


Output: the bourne identity