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

What is almost identical across all nations and jurisdictions no wait tell me what is never identical?
What is never identical across all nations and jurisdictions?

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

What happens when the disorder umm I mean immune system less active than normal?
What happens when the immune system less active than normal?