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

Input: Consider Input: What or no make that whose principles were the principle of faunal succession built upon?

Output: Whose principles were the principle of faunal succession built upon?


Input: Consider Input: Where are America's rather what are are the 3 post popular libraries for undergraduates in the Harvard system?

Output: What are the 3 post popular libraries for undergraduates in the Harvard system?


Input: Consider Input: When was um no in what year was the Eastern Roman Empire established?
Output: In what year was the Eastern Roman Empire established?