TASK DEFINITION: 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".
PROBLEM: Which book he read the book was that one.

SOLUTION: unacceptable

PROBLEM: It is the folks up at corporate headquarters who the sooner you solve this problem, the more easily you'll satisfy.

SOLUTION: unacceptable

PROBLEM: Nora sent the book to Peter.

SOLUTION:
acceptable