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.

What is the capacity of university of phoenix stadium?
What is the default sitting capacity of university of phoenix stadium? 
 63,400

When was the carbon tax introduced in canada?
When was the first carbon tax introduced in a canadian territory? 
 June 2007

When does ios 11 release for iphone 7?

When does ios 11 public beta release for iphone 7? 
 June 26, 2017