Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
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Question: What is er uh what evolved in later vertebrates?

Answer: What evolved in later vertebrates?


Question: What helps or rather what are found in fossils?

Answer: What are found in fossils?


Question: What 2012 report no sorry 2011 report was requested by the IPCC?

Answer:
What 2011 report was requested by the IPCC?