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.

Example Input: Who was the first black superhero in dc?
Example Output: Who was the first black superhero in dc in 1972? 
 John Stewart

Example Input: Who sang lead vocals on twist and shout by the beatles?
Example Output: Who sang lead vocals on the song twist and shout by the beatles? 
 John Lennon

Example Input: When did the indian numbering system reach europe?
Example Output:
When was the first mention of Hindu-Arabic numerals in europe? 
 976