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".

The little boy hit the child with a toy.
acceptable

I wonder who could solve the problem in this way.
acceptable

They said that Tom would pay up, and pay up he will.

acceptable