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

Ex Input:
Which European country has the Cupon as its currency?

Ex Output:
moldovan cupon


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

Ex Output:
edwin h. land


Ex Input:
Which organ of the human body comprises the dermis and epidermis?

Ex Output:

epidermis