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".

I mixed the eggs and cream together.
acceptable

How do you wonder which problem to solve?
unacceptable

Robert is eager to do his homework.

acceptable