TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: How many societal class divisions were in the plan Han rejected, oh not him, Kublai?

SOLUTION: How many societal class divisions were in the plan Kublai rejected?

PROBLEM: Who is no what famous conductor went to Harvard?

SOLUTION: What famous conductor went to Harvard?

PROBLEM: What is the no How many people gather along the banks of the Vistula for the Wreaths festival?

SOLUTION:
How many people gather along the banks of the Vistula for the Wreaths festival?