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

Ex Input:
Where no rather when was UNEP founded?

Ex Output:
When was UNEP founded?


Ex Input:
What is cost engineers no no scratch that what is an obvious source for cost engineers?

Ex Output:
What is an obvious source for cost engineers?


Ex Input:
What were the endowments I mean operating expenses of the Groton School in 2012?

Ex Output:
What were the operating expenses of the Groton School in 2012?