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: I wonder who could solve the problem in this way.

SOLUTION: acceptable

PROBLEM: Heidi gave a present to herself.

SOLUTION: acceptable

PROBLEM: Mary questioned Joe's desire to eat cabbage, but only after I had questioned Sally's desire to.

SOLUTION:
unacceptable