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

[EX Q]: What is the Rhine, scratch that, where does its name come from?
[EX A]: Where does the name Rhine derive from? 

[EX Q]: On which three pillars no no what were the three forms of environmental determinism?
[EX A]:  What were the three forms of environmental determinism?

[EX Q]: Who was the first democratically elected president of Egypt for many centuries, what was the Brotherhood described as?
[EX A]:
For many centuries, what was the Brotherhood described as?