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: Who was in charge of russia during the cold war?

SOLUTION: Who was in charge of Russia at the beginning of the Cold War? 
 Joseph Stalin

PROBLEM: Who came up with the facial feedback hypothesis?

SOLUTION: Who proposed the facial feedback hypothesis? 
 William James

PROBLEM: When does winter occur in the northern hemisphere?

SOLUTION:
What is the name of the day that winter occurs in the northern hemisphere? 
 Winter Solstice