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".

John to fix the computer.
unacceptable

John fed the baby rice.
acceptable

My uncle didn't buy anything for Christmas, but my aunt did it for him and it was bright red.

unacceptable