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.

Who built the second temple in the bible?
Who built the second temple in the bible as worker originally? 
 Jewish exile groups

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

When was tge great wall of china built?

When were the first fortifications built for the great wall of China? 
 7th century BC