TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: When did no no didn't British begin to build fort under William Trent?

SOLUTION: When didn't British begin to build fort under William Trent?

PROBLEM: Original sorry late published versions were utilized by who?

SOLUTION: Late published versions were utilized by who?

PROBLEM: What did William Smith do in the US no no rather tell me what did he cross about 50 times?

SOLUTION:
What did William Smith cross about 50 times?