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 projects a year does no wait the Warsaw Gallery Weekend is held when?

SOLUTION: When is the Warsaw Gallery Weekend held?

PROBLEM: In the layered model of the Earth, the mantle has two layers above it. What are they no sorry it has two layers belows it, what are they?

SOLUTION: In the layered model of the Earth, the mantle has two layers below it. What are they? 

PROBLEM: Who has the reserve er ability to alter income tax in Scotland by up to 33 pence?

SOLUTION:
Who has the ability to alter income tax in Scotland by up to 33 pence?