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.

Input: Consider Input: Who wrote i look to you by whitney houston?

Output: Robert Sylvester Kelly


Input: Consider Input: Who did the united states acquire texas from?

Output: Mexico


Input: Consider Input: Where is olduvai gorge located (what countries)?


Output: United Republic of Tanzania