instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which English classic horse race for 3 year olds held at Doncaster every September began in 1776?
answer:
doncaster racecourse


question:
Who plays Dr Evil the nemesis of Austin Powers in the Austin Powers series of films?
answer:
austin powers


question:
Boston lies in which state of the USA?
answer:

boston