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".

Q: Willy is taller than Bill by as much as I know a boy who thinks that Bill is taller than Dan.

A: unacceptable
****
Q: The book valued $200.

A: unacceptable
****
Q: How certain that the Mets will win are you?

A:
acceptable
****