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".

Calvin had been eating.
acceptable

The five `` soundscape '' pieces gave a festive air to Park Square.
acceptable

Hate those who criticize Carter though he may, it doesn't matter.

acceptable