instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which horse won the 2008 Grand National?
answer:
2008 grand national


question:
Basil Rathbone made 14 Sherlock Holmes films. Who played the part of Dr Watson?
answer:
watson


question:
What is the name of Adele's first album?
answer:

adele