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.

Ex Input:
concept: John F Kennedy  question:  who became president when jfk was killed?

Ex Output:
['Lyndon B. Johnson']


Ex Input:
concept: Virgin America  question:  what type of aircraft does virgin america use?

Ex Output:
['Airbus A319', 'Airbus A320']


Ex Input:
concept: Matthias Jakob Schleiden  question:  what was matthias schleiden known for?

Ex Output:

Botanist