TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: Who won the battle of Lake Niagara no wait Lake George rather?

SOLUTION: Who won the battle of Lake George?

PROBLEM: What is the name of a prime number, oops my bad, an algebraic structure in which addition, subtraction and multiplication are defined?

SOLUTION: What is the name of an algebraic structure in which addition, subtraction and multiplication are defined?

PROBLEM: Who was defeated by Mirabilis no um Montcalm at Quebec?

SOLUTION:
Who was defeated by Montcalm at Quebec?