instruction:
Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
question:
Why is the theory no scratch that the principle of faunal succession was developed 100 years before whose theory of evolution?
answer:
The principle of faunal succession was developed 100 years before whose theory of evolution?


question:
Was wow why might fleas no wrong again rats not be responsible for the Black Death plague?
answer:
Why might rats not be responsible for the plague?


question:
What year er who stated a change of the length of the Rhine?
answer:
Who stated a change of the length of the Rhine?