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 seems intelligent to study medicine.
acceptable

That guy, who I think might be drunk, just hit me!
acceptable

That Sam didn't pick those packages up which are to be mailed tomorrow is possible.

acceptable