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

Ex Input:
In 1459, the Battle of Blore Heath in Staffordshire, England, 2 miles east of Market Drayton in Shropshire, was the first major battle of which campaign?

Ex Output:
england


Ex Input:
Physics. What is the SI unit for amount of substance?

Ex Output:
amount of substance


Ex Input:
What was the title of the Andrew Lloyd-Webber musical about the Profumo Affair that flopped in early 2014?

Ex Output:

andrew lloyd webber