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".

A boy did not laugh.
acceptable

An oak tree will grow from that acorn.
acceptable

Surprised me that you came early.

unacceptable