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 British Prime Minister delivered the 'Winds of Change' speech in 1960?

Output: wind of change

Input: Consider Input: Which jockey won the 1981 UK Grand National on Aldaniti?

Output: aldaniti

Input: Consider Input: Which American philosopher built a hut near Walden pond, Concord in 1845, and lived there as a hermit for a few years?
Output: concord