Part 1. Definition
Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
Part 2. Example
Who did the Han Chinese want to help the Khitan no I mean the Mongols fight?
Answer: Who did the Han Chinese want to help the Mongols fight?
Explanation: The input initially means Khitan and then changes to Mongols, hence this is correct.
Part 3. Exercise
How umm I mean when did Warsaw start to rebuild?
Answer:
When did Warsaw start to rebuild?