TASK DEFINITION: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
PROBLEM: What is the the old north no the old south branch of the Rhine called?

SOLUTION: What is the the old south branch of the Rhine called?

PROBLEM: What does er when economic inequality is larger, more waste and pollution is?

SOLUTION: When economic inequality is larger, more waste and pollution is?

PROBLEM: What is the name of the trial or uh process which confirms the primality of a number n?

SOLUTION:
What is the name of the process which confirms the primality of a number n?