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

Example Input: In which century by what term is a type of advocacy of empire known no do most consider the beginning of imperialism?
Example Output:  In which century do most consider the beginning of imperialism?

Example Input: United States or no make that NSF began in 1985 to promote what?
Example Output: NSF began in 1985 to promote what?

Example Input: What shows the location of drill cores or rather what computer program allows stratigraphers to observe the subsurface in three dimensions?
Example Output:
What computer program allows stratigraphers to view the subsurface in three dimensions?