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.

[Q]: What are the most popular sports in usa?
[A]: What is the most popular sport in the USA to participate in? 
 Exercise walking


[Q]: When did the first video recorder come out?
[A]: What year was the prototype of the video recorder invented? 
 1953


[Q]: All 5 layers of the earth's atmosphere?
[A]:
What is the layer of Earths atmosphere between 440 and 6200 miles? 
 Exosphere