TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: How many soldiers no Khitan Tumens were there?

SOLUTION: How many Khitan Tumens were there?

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

SOLUTION: Where do most students at the Groton School come from?

PROBLEM: What was the Great Pestilence, or actually the Justinian plague, epidemic called?

SOLUTION:
What was the Justinian plague epidemic called?