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]: How many copies did back in black sell?
[EX A]: About how many copies did back in black sell worldwide? 
 50 million copies

[EX Q]: Who became president of the republic of china after the overthrow of the qing dynasty?
[EX A]: Who was the first formal president of the Republic of China after the overthrow of the Qing Dynasty? 
 Yuan Shikai

[EX Q]: Who won the men's french open this year?
[EX A]:
Who won the men's singles title in the 2017 French Open? 
 Rafael Nadal