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

[Q]: Cassandra, Grizabella and Skimbleshanks are all characters in which Andrew Lloyd Webber musical?
[A]: andrew lloyd webber


[Q]: The Brooklyn Bridge crosses which river?
[A]: brooklyn bridge


[Q]: Which actress starred in `Dial M For Murder`, `Rear Window` and `High Society`?
[A]:
high society