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 most common language in mexico?

SOLUTION: What is the most common spoken language in mexico? 
 Spanish

PROBLEM: What led to the end of indus valley civilization?

SOLUTION: According to Sir Mortimer Wheeler in 1953, what led to the end of indus valley civilization? 
 "Aryan invasion"

PROBLEM: What is the largest bill made in the us?

SOLUTION:
What is the largest legal tender bill made in the us? 
 $10,000