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

Input: Consider Input: What happens when the what cause the immune system to treat foreign organisms like normal tissues?

Output: What causes the immune system to treat foreign organisms like normal tissues?


Input: Consider Input: Along with English and maths I mean mathematics, what subject replaced values education for fourth year students?

Output: Along with English and mathematics, what subject replaced values education for fourth year students?


Input: Consider Input: Which year were two assessment reports published, never mind I mean finalized?
Output: Which year were two assessment reports finalized?