TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: In what battle were the Tran dynasty no the um what was their names oh Mongols joined by the Tran?

SOLUTION: In what battle were the Mongols joined by the Tran?

PROBLEM: What city, well area actually, remained uninhabited for thousands of years?

SOLUTION: What area remained uninhabited for thousands of years?

PROBLEM: When did Ariq Boke invade um no Mongke Khan die?

SOLUTION:
When did Mongke Khan die?