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: Who sings hawaiian version of over the rainbow?
Example Output: Israel Kaʻanoʻi Kamakawiwoʻole

Example Input: When did ice dancing debut in the olympics?
Example Output: 1976 Winter Olympics

Example Input: The number of electrons in the innermost shell of lithium (atomic number 3)?
Example Output:
2