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

Q: What is the Rhine, scratch that, where does its name come from?

A: Where does the name Rhine derive from? 
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Q: What does Mnemiopsis er the Beroe eat?

A: What does the Beroe eat? 
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Q: Primitive jawless possess an array of genes I mean an array of receptors referred to as what?

A:
Primitive jawless vertebrates possess an array of receptors referred to as what?
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