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: Which jockey rode Red Alligator to victory in the 1968 Grand National?

Output: red alligator


Input: Consider Input: Which band's first top ten single was the 10538 Overture in 1972?


Output: 10538 overture