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

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


Ex Input:
concept: Nadia Boulanger  question:  where did nadia boulanger live?

Ex Output:
['Paris']


Ex Input:
concept: Helen Keller  question:  what challenges did helen keller have to face?

Ex Output:

Deafness, Vision loss