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\*.

Input: Consider Input: where does the white house get their christmas tree

Output: various growers nationwide


Input: Consider Input: where did the first civilization in africa start

Output: Kingdom of Kush


Input: Consider Input: when was the boeing 747 first used for commerical service


Output: 1970