In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

Input: Consider Input: When did we become the united states of america?

Output: When, based on evidence, did we begin calling ourselves the united states of america?


Input: Consider Input: Name of submarine in voyage to the bottom of the sea?

Output: Name of submarine in voyage to the bottom of the sea TV series?


Input: Consider Input: When was hawaii annexed by the united states?


Output: When was Hawaii annexed by the US?