In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

When did the ussr agree to a unified germany inside of nato?
When did Gorbachev express agreement with a unified Germany inside of NATO?

When did the astros become an american league team?
What year did the astros become an american league team?

Who was contracted to design golden gate park?

Who was contracted as commissioner to design golden gate park?