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

Example Input: Who wrote Freakonomics and is also a physicist no an anthropologist?
Example Output: Who wrote Freakonomics and is also an anthropologist?

Example Input: Circuit switching charges a fee for communication no no um transferring what kind of information?
Example Output: Circuit switching charges a fee for transferring what kind of information?

Example Input: What has or how long have humans been impacting the delta for?
Example Output:
How long have humans been impacting the delta for?