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.

Who played the clown in the orginal it?
Who played the clown in the It (miniseries)?

When did motown the musical open on broadway?
When did motown the musical start previews on broadway?

When did derek shepherd leave grey's anatomy?

What date did Derek Shepherd leave Grey's Anatomy?