TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: What cultures were part of Jurchens' umm Kublai's administration?

SOLUTION: What cultures were part of Kublai's administration?

PROBLEM: Where did Mongke Khan attack the Song dynasty or rather where did he defend it?

SOLUTION:  Where did Mongke Khan defend the Song dynasty?

PROBLEM: Which or no make that how many US President once campaigned in Cambridge?

SOLUTION:
How many US Presidents once campaigned in Cambridge?