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: The hat which that I brought seemed strange to the nurse was a fedora.

A: unacceptable
****
Q: She knocked herself on the head with a zucchini.

A: acceptable
****
Q: I would prefer that he not have finished.

A:
acceptable
****