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

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

What kind of non-peer-reviewed sources doesn't no does the IPCC use?
What kind of non-peer-reviewed sources does the IPCC use?

What was a tropical climate no the similar view about the Asian continent not called?
What was a similar view about the Asian continent not called?