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 president declared Smith to press secretary.
unacceptable

A boy did not laugh.
acceptable

It is important the more you eat, the more careful to be.

unacceptable