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

Ex Input:
Which country does the Moselle river encounter it's main tributaries no not the Moselle but the Rhine river?

Ex Output:
Which country does the Rhine encounter it's main tributaries?


Ex Input:
What is sorry What makes detection by killer T cells more likely?

Ex Output:
What makes detection by killer T cells more likely?


Ex Input:
Who was the successors of Khan um wait no the Kublai Khan's grandfather?

Ex Output:
Who was Kublai Khan's grandfather?