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 continued writing poems.
acceptable

Alison pierced the cloth with a needle.
acceptable

What do you think the man who is standing by the door is doing now?

acceptable