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

What style of facial hair was famously worn by American Civil War general Ambrose Burnside?
ambrose burnside

Who was the father of Edward the Elder, the Anglo-Saxon King from 899 to 924?
edward the elder

Priscilla, Beans, Roadkill and Bad Bill all feature in which animated film?

bill