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: Mary's criticism of him was cruel.

SOLUTION: acceptable

PROBLEM: They widely believed that John was ill.

SOLUTION: acceptable

PROBLEM: Janet broke the crystal.

SOLUTION:
acceptable