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

[EX Q]: What do the tentacles on the inner surface no no on plankton do to help them find prey?
[EX A]: What do the tentacles on plankton do to help them find prey?

[EX Q]: When did or what type of math was advanced during the Yuan?
[EX A]: What type of math was advanced during the Yuan?

[EX Q]: Over how many countries er like studies have shown that violence is more common in societies with income differences?
[EX A]:
Over how many studies have shown that violence is more common in societies with income differences?