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

Example Input: The Briish Airways subsidiary BA Connect was sold to which other airline?
Example Output: airline

Example Input: What was the currency of Austria before the Euro?
Example Output: austria

Example Input: The Greeks called her Athena, what was the Roman name for this Goddess?
Example Output:
athena