In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

Example Input: when did the iphone 5 first come out
Example Output: September 21, 2012

Example Input: who is the head coach of the raiders
Example Output: Jon Gruden

Example Input: where did the phrase eating crow come from
Example Output:
unknown