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

[EX Q]: During what period was the Tethys floor discovered no no sorry when did the Jurassic Period end?
[EX A]: When did the Jurassic Period end?

[EX Q]: What project is or actually I mean what helps the owner in design and construction?
[EX A]: What helps the owner in design and construction?

[EX Q]: What are ctenophora commonly known as no do cnidarians use their combs for?
[EX A]:
What do cnidarians use their combs for?