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

Example Input: What is one aspect of the hydrography of the former stream urgh delta characterized by?
Example Output: What is one aspect of the hydrography of the former delta characterized by?

Example Input: What is er uh what evolved in later vertebrates?
Example Output: What evolved in later vertebrates?

Example Input: Very few seats, no, I mean ministers are drawn from amongst whom?
Example Output:
Very few ministers are drawn from amongst whom?