TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Established in 1919, which is the world's oldest surviving airline?

SOLUTION: airline

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

SOLUTION: edwin h. land

PROBLEM: Who won the 'Oscar' for Best Actress in the 1950's film 'Born Yesterday'?

SOLUTION:
born yesterday