Definition: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
Input: What does er what property of the harmonic series 1 + 1/2 + 1/3 +1/4 ... shows that there is an infinite number of Basels?

What property of the harmonic series 1 + 1/2 + 1/3 +1/4 ... shows that there is an infinite number of Basels?