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 impresses his friends all as pompous.
unacceptable

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

Herman whipped the cream.

acceptable