TASK DEFINITION: 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.
PROBLEM: What is the upper most layer of soil?

SOLUTION: What is the upper most layer of soil called? 
 "O Horizon or A Horizon,"

PROBLEM: Who introduced the bass clarinet as a solo instrument in jazz?

SOLUTION: Who recorded the first known bass clarinet solo in jazz? 
 Wilbur Sweatman

PROBLEM: Who has been the youngest president of usa?

SOLUTION:
Who has been the youngest president to be succeeded to the office of usa? 
 Theodore Roosevelt Jr.