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: To train his horse would be desirable.

SOLUTION: acceptable

PROBLEM: I didn't realize that it had rained and some crops had been destroyed.

SOLUTION: acceptable

PROBLEM: John is happy about the outcome.

SOLUTION:
acceptable