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

Q: What specific groups are found within the African-American population, I take that back, the Mexican-American population?

A: What specific groups are found within the Mexican-American population?
****
Q: What social problems no what nationality aren't researchers Richard G. Wilkinson and Kate Pickett?

A: What nationality aren't researchers Richard G. Wilkinson and Kate Pickett?
****
Q: How do ctenophores adapt to pressure no control buoyancy?

A:
How do ctenophores control buoyancy?
****