TASK DEFINITION: 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.
PROBLEM: When did plasma become a state of matter?

SOLUTION: When did plasma become discovered as a new state of matter? 
 1879

PROBLEM: When does season 4 of last man on earth?

SOLUTION: When does season 4 of last man on earth start airing? 
 October 1, 2017

PROBLEM: Who sang knock three times on the ceiling if you want me?

SOLUTION:
Which men sang knock three times on the ceiling if you want me? 
 Tony Orlando