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

[EX Q]: Field Marshal Arthur Wellesley, shares his better known title with which Southern Hemisphere capital city?
[EX A]: arthur wellesley, 1st duke of wellington

[EX Q]: In the film `Breakfast at Tiffanys`, what is the name of Audrey Hepburn`s character`s cat ?
[EX A]: breakfast at tiffany's

[EX Q]: Carlos Marin, Urs Buhler, Sebastien Izambard and David Miller are members of which operatic pop vocal group?
[EX A]:
david miller