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.

Ex Input:
Where was the first mcdonald's in phoenix built?

Ex Output:
Central Avenue and Indian School Road


Ex Input:
Cancers that arise in epithelial tissue are termed?

Ex Output:
Carcinoma


Ex Input:
Where is the electron transport chain located in bacterial cells?

Ex Output:

cell membrane