Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

Q: When is uh instead uh what region does use the term 'private schools' to refer to universities?

A: What region does use the term 'private schools' to refer to universities?
****
Q: What rather who identified gravity as a force?

A: Who identified gravity as a force?
****
Q: How or wait when did Kublai ban the international Mongol slave trade?

A:
When didn't Kublai ban the international Mongol slave trade?
****