TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: 'Edward Lewis' and 'Vivian Ward' were the principal characters in which popular 1990 film?

SOLUTION: edward lewis

PROBLEM: Besides the Caucasus, what mountain range forms the border of Europe and Asia?

SOLUTION: asia

PROBLEM: Where are the sheer cliffs of the Drakensberg?

SOLUTION:
drakensberg