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: I sent a book to Louis.

Answer: acceptable


Question: Smith threw the first baseman the ball.

Answer: acceptable


Question: Fruit at once hit the roof against the ground.

Answer:
unacceptable