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

Input: Consider Input: Who played Bonnie in the 1967 film 'Bonnie And Clyde'?

Output: bonnie and clyde

Input: Consider Input: Which horse won the 2008 Grand National?

Output: 2008 grand national

Input: Consider Input: Mount Etna and the Plain of Catania are on which island?
Output: mount etna