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

Zoey Barkow, Kevin Peyton, Eddie Walzer and Fitch Cooper are all characters in which US television series?
merritt wever

Which singer played Billie Holiday in the 1972 film 'Lady Sings The Blues'?
lady sings the blues

Jacob Epstein and Barbara Hepworth were famous in which branch of the arts?
barbara hepworth