TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who was Domenikos Theotocopoulos better known as?

SOLUTION: museum of el greco

PROBLEM: Which boxer won a 1.8m claim against promotor Frank Warren in March 2009?

SOLUTION: boxing

PROBLEM: Which actor went from a bridge in 'The Cruel Sea' to a 'Bridge On The River Kwai'?

SOLUTION:
the bridge on the river kwai