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: Tom ordered bacon, and Dick lettuce, and I think that Harry tomatoes.

Answer: unacceptable


Question: What did Becky buy?

Answer: acceptable


Question: Why he knows the answer!

Answer:
unacceptable