TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: I which European city will you find 'Dam Square'?

SOLUTION: dam square

PROBLEM: What did Edwin Land invent because of his daughters' wish for instant and 'snappy' results?

SOLUTION: edwin h. land

PROBLEM: In the 1950s, which country on the east coast of the Bay of Bengal was bordered by Pakistan, India, Tibet, China, French Indo China and Siam?

SOLUTION:
china