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".

[EX Q]: My family always summers at the seashore.
[EX A]: acceptable

[EX Q]: What did he look up?
[EX A]: acceptable

[EX Q]: There is only one chemical substance involved in nerve transmission.
[EX A]:
acceptable