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".

Steve tossed the ball.
acceptable

Willy is taller than Bill by as much as I know a boy who thinks that Bill is taller than Dan.
unacceptable

The lake was camped beside by my sister.

unacceptable