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

Example Input: The Brooklyn Bridge crosses which river?
Example Output: brooklyn bridge

Example Input: Name the town in California where Clint Eastwood was elected mayor in 1986.?
Example Output: clint eastwood

Example Input: Algeria became independent from which European country in 1962 after over 100 years of rule?
Example Output:
algeria