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".

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

I brought a razor with which to shave himself.
unacceptable

Fabio asked had if Claus run a marathon.

unacceptable