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".

The government prescribes the height of the lettering on the covers of the reports.
acceptable

On which bed does Tom sleep?
acceptable

Andy pinched Sarah and tickled herself.

unacceptable

