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

Example Input: When was the plague no who fought in the great Northern war?
Example Output: Who fought in the great Northern war?

Example Input: Who is no what famous conductor went to Harvard?
Example Output: What famous conductor went to Harvard?

Example Input: What caused the Lake Constance er uh Rhine to extend its watershed northward?
Example Output:
What caused the Rhine to extend its watershed northward?