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: In the church sang a choir.

Answer: acceptable


Question: A book was sent Louis.

Answer: unacceptable


Question: Which textbook did the teacher use in the class last summer?

Answer:
acceptable