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

Input: Consider Input: Which TV screenwriter created the science fiction shows, Survivors and Blake's Seven?

Output: blake's 7

Input: Consider Input: Which striped or checked cotton cloth takes its name from the Malay word for striped?

Output: cotton

Input: Consider Input: Who stabbed 'Carmen' in the opera of the same name?
Output: carmen