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 am not certain about whether he will go or not.

SOLUTION: acceptable

PROBLEM: With their teacher, the kids have arrived safely, hasn't he?

SOLUTION: unacceptable

PROBLEM: John tagged the monkey in the forest.

SOLUTION:
acceptable