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".

He established his innocence with the letter.
acceptable

There is enough of the bread left to have tomorrow.
acceptable

He seems to become more corrupt, if every senator talks to more lobbyists.

unacceptable