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.

[EX Q]: What is the largest coin in the us?
[EX A]: What is the largest coin ever minted in the us? 
 gold "Half Union" pattern in 1877

[EX Q]: When was the great pacific garbage patch found?
[EX A]: When was the great pacific garbage patch found to exist by hypothesis? 
 1988

[EX Q]: Difference between bid and offer in stock market?
[EX A]:
Difference between bid and offer in stock market, except in the case of a market maker? 
 bid–ask spread