instruction:
In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.
question:
Who played charlie in the chocolate factory 2005?
answer:
Alfred Thomas Highmore


question:
Journal of optics a pure and applied optics abbreviation?
answer:
J. Opt.


question:
Who plays gaston in the live-action beauty and the beast?
answer:

Luke Evans