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".

Whether this is feasible hasn't yet been determined.
acceptable

Tony bent the rod against the table.
acceptable

I think that Mort's a swell guy, and Lenny thinks so too.

acceptable