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

What is the largest city in Bavaria?
bavaria

In which film of 1995 did Robert De Niro and Al Pacino appear on screen together for the first time?
al pacino

In 2009 what became the second animated film in history to be nominated for a Best Picture Oscar?

academy award for best picture