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.

Who is the father of emma on friends?
Which character is the father of emma on friends? 
 Ross Geller, Ph.D.

Who sang i've been thinking about you?
Who sang i've been thinking about you, released in 1990? 
 Londonbeat

When did the us go off the gold standard?

When did the us go off the gold standard temporarily for the first time? 
 July 31, 1914