instruction:
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:
Ellen conferred for Helen to come.
answer:
unacceptable


question:
Brown equipped a camera at Jones.
answer:
unacceptable


question:
A wonderful opportunity presented itself yesterday.
answer:

acceptable