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 saw him leaving the main building.

SOLUTION: acceptable

PROBLEM: Volunteers praise easily.

SOLUTION: unacceptable

PROBLEM: The more contented I laughed at the nurse who thought that we were becoming, the more angry we grew at the doctors.

SOLUTION:
unacceptable