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 astros last play in the world series?
When did the Astros play in the World Series for the first time?

Name of submarine in voyage to the bottom of the sea?
Name of submarine in voyage to the bottom of the sea TV series?

Which one is the biggest city in usa?

What is the biggest city in the USA by area?