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

Ornette Coleman, Louis Armstrong and Charles Mingus are associated with what style of music?
charles mingus

Which Best Picture nominated movie tells the story of US soldier, 'Chris' Kyle?
chris kyle

A hugely valuable little sculpted guitar recently recovered by police in Italy was made by which cubist artist for his daughter Paloma?

cubism