instruction:
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.
question:
What is formed on top of continental crust?
answer:
What is formed on top of the continental crust known as continental shelves? 
 ocean waters


question:
Who was the first woman to hike the appalachian trail?
answer:
Who was the first woman to hike the appalachian trail three times? 
 Emma Rowena Gatewood


question:
What was the period before the enlightenment called?
answer:

Within the early modern period, what was before the enlightenment? 
 Petrine Era