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.
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Question: Where is the tigris and euphrates river valley located?

Answer: What continent is the tigris and euphrates river valley located? 
 Western Asia


Question: What is the volcano in yellowstone national park called?

Answer: What is the volcano in Yellowstone national park normally called? 
 Yellowstone Caldera


Question: When was the immigration reform and control act passed?

Answer:
When was the immigration reform and control act passed on senate? 
 September 19, 1985