TASK DEFINITION: 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".
PROBLEM: The more geniuses John meets, the angrier he gets.

SOLUTION: acceptable

PROBLEM: When can we register for graduation?

SOLUTION: acceptable

PROBLEM: I gave a gun which I had cleaned to my brother.

SOLUTION:
acceptable