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

Example Input: In 2011, Christian Bale won a Best Supporting Actor Oscar for his role as an assistant to his half-brother in which boxing related film?
Example Output: christian bale

Example Input: Written by Edgar Allen Poe and published in 1845, what poem repeats the famous line `nevermore`?
Example Output: edgar allan poe

Example Input: Which US No 1 single came from Diana Ross's platinum album Diana?
Example Output:
diana ross