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

Ex Input:
Who married the woman who was to become Queen Beatrix of the Netherlands, on 10 March 1966?

Ex Output:
beatrix


Ex Input:
Zoey Barkow, Kevin Peyton, Eddie Walzer and Fitch Cooper are all characters in which US television series?

Ex Output:
merritt wever


Ex Input:
With an accepted height of 11,249 feet, what is the tallest mountain in Oregon, and the 4th highest in the Cascades?

Ex Output:

cascade range