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 girls played in the water and swam under the bridge.

SOLUTION: acceptable

PROBLEM: Steve pelted the squirrels with acorns.

SOLUTION: acceptable

PROBLEM: There arrived three men at the palace.

SOLUTION:
unacceptable