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

Ex Input:
What is cost engineers no no scratch that what is an obvious source for cost engineers?

Ex Output:
What is an obvious source for cost engineers?


Ex Input:
When was the no where is the geochronologists um sorry stratigraphic section?

Ex Output:
Where is the stratigraphic section?


Ex Input:
When did What did cellular theory claim was in an organism's humors?

Ex Output:

What did cellular theory claim was in an organism's humors?