instruction:
Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
question:
Where are America's rather what are are the 3 post popular libraries for undergraduates in the Harvard system?
answer:
What are the 3 post popular libraries for undergraduates in the Harvard system?


question:
How wide is the glacial alpine valley known as the Seeztal valley or no make that the Rhine valley?
answer:
How wide is the glacial alpine valley known as the Rhine Valley?


question:
What is QED or rather where are photons the fundamental exchange photon?
answer:
Where are photons the fundamental exchange photon?