Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
Example: Who did the Han Chinese want to help the Khitan no I mean the Mongols fight?
Example solution: Who did the Han Chinese want to help the Mongols fight?
Example explanation: The input initially means Khitan and then changes to Mongols, hence this is correct.

Problem: As of January 2016 what is um or rather how many digits does the largest known prime consist of?
Solution: As of January 2016 how many digits does the largest known prime consist of?