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.

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

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


Input: Consider Input: concept: San Francisco  question:  what is the name of the main train station in san francisco?

Output: ['Emeryville Amtrak Station']


Input: Consider Input: concept: John Paul Jones  question:  who did john paul jones fight for?


Output: ['Continental Navy', 'Imperial Russian Navy']