TASK DEFINITION: Based on the given question and tppic, give an answer. The answer is available on on the internet. The questions are mostly centered around a single named entity.
PROBLEM: concept: Hudson River  question:  where's the hudson river?

SOLUTION: ['New York City']

PROBLEM: concept: Anthony Kennedy  question:  who nominated anthony kennedy?

SOLUTION: ['Ronald Reagan']

PROBLEM: concept: Lex Luthor  question:  who plays young lex luthor in smallville?

SOLUTION:
Michael Rosenbaum