In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to provide one question which clarifies the input question and it has one unique answer, and also provide an answer to the generated question. Generated question and answer should be separated with a new line.
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Question: Where does the amazon river start and end?

Answer: Where does the amazon river start according to understanding before 2014? 
 headwaters of the Apurímac River on Nevado Mismi


Question: Who has the lowest era in mlb history?

Answer: Who has the lowest era in MLB history for a career? 
 Ed Walsh


Question: Who was the oldest person to play major league baseball?

Answer:
Who was the oldest person to play major league baseball in a regular season game? 
 Satchel Paige