Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
One example is below.
Q: Who did the Han Chinese want to help the Khitan no I mean the Mongols fight?
A: Who did the Han Chinese want to help the Mongols fight?
Rationale: The input initially means Khitan and then changes to Mongols, hence this is correct.
Q: What is the oldest known rock in the world no sorry what has happened to the the rock in the Grand Canyon that is the oldest rock in the world?
A:
What has happened to the the rock in the Grand Canyon that is the oldest rock in the world?