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

When do um where do most students at the Groton School come from?
Where do most students at the Groton School come from?

When didn't violence start in war no sorry when did it start?
When did violence start in war?

What nominal title Mongol or no make that Yuan emperors reject?
What nominal title did Yuan emperors reject?