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

How many professors oh um students did Charles William Eliot teach throughout his tenure at Harvard?
How many students did Charles William Eliot teach throughout his tenure at Harvard?

What is the Rhine, scratch that, where does its name come from?
Where does the name Rhine derive from? 

What well er who governs Nobel Prize central bank?

Who governs Nobel Prize central bank?