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: What did Bill claim that he read?

Answer: acceptable


Question: I threw Mary the ball, but she was looking at the birds flying overhead and didn't even notice.

Answer: acceptable


Question: The boy's we elected guardian's employer president.

Answer:
unacceptable