You're given a sentence and your task is to classify whether the sentence is acceptable or not. Any sentence which is grammatically correct, has a naturalistic text, is written by a native speaker and which minimizes superfluous content is acceptable, otherwise unacceptable. If the sentence is acceptable then write "acceptable", otherwise "unacceptable".

Q: Nora sent at the book to Peter.

A: unacceptable
****
Q: What did he look up?

A: acceptable
****
Q: The more he eats, the fatter he goes to a doctor when he gets.

A:
unacceptable
****