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".

Example Input: Alison pierced the cloth with a needle.
Example Output: acceptable

Example Input: I bought the parrot in the store.
Example Output: acceptable

Example Input: the book of poems with a red cover from Blackwell by Robert Burns takes a very long time to read.
Example Output:
acceptable