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.

When was the chicken pox vaccine first given?
When did the Chicken Pox vaccine become commercially available? 
 1984

Who sings never say never with justin bieber?
Who raps in the song "Never Say Never" with Justin Beiber? 
 Jaden Smith

Where did the allied leaders meet in july of 1945 to discuss how germany was to be punished?

In what city did the allied leaders meet in July of 1945 to discuss how Germany was to be punished? 
 Potsdam, Germany