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.

[Q]: concept: Luke Bryan  question:  where is luke bryan from?
[A]: ['Leesburg']


[Q]: concept: Chile  question:  who is the current president of chile 2011?
[A]: ['Sebastián Piñera']


[Q]: concept: Battle Of Antietam  question:  what is the battle of antietam?
[A]:
Maryland Campaign, American Civil War