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.

Example Input: Where does prime rib come from on the cow?
Example Output: cut of beef from the primal rib

Example Input: Neurotransmitter filled packets in the presynaptic neuron are called?
Example Output: Vesicle cluster

Example Input: When did allis chalmers go out of business?
Example Output:
January 1999