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

Example Input: Which form of dementia is named after a German psychiatrist who first described it in 1906?
Example Output: dementia

Example Input: Aaron Copeland wrote a ballet about which American folk hero?
Example Output: aaron copeland

Example Input: What is the second biggest city in Australia?
Example Output:
australia