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".
--------
Question: She held him by the arm.

Answer: acceptable


Question: I am not certain about whether he will go or not.

Answer: acceptable


Question: Where and when did Bill put the book?

Answer:
unacceptable