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: When was the great pacific garbage patch found?

Answer: When was the great pacific garbage patch found to exist by hypothesis? 
 1988


Question: What do brackets in an chemical equation mean?

Answer: What do square brackets in an chemical equation mean for molecules? 
 used around the chemical molecular formula


Question: When did helmets become mandatory in the tour de france?

Answer:
When did yellow helmets for the leading team become mandatory in the tour de france? 
 2012