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.

Ex Input:
When did the ussr agree to a unified germany inside of nato?

Ex Output:
When did Gorbachev express agreement with a unified Germany inside of NATO?


Ex Input:
Who introduced the technique of sign drawing of a man as a measure of intelligence?

Ex Output:
Who first introduced the technique of sign drawing of a man as a measure of intelligence?


Ex Input:
Which is the biggest nuclear power plant in india?

Ex Output:

Which is the biggest nuclear power plant in India, that already exists?