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: Heather cabled for Sara to come.

SOLUTION: acceptable

PROBLEM: The five `` soundscape '' pieces gave a festive air to Park Square.

SOLUTION: acceptable

PROBLEM: This rock is too heavy for me to begin to decide about helping Bob to try to pick up.

SOLUTION:
unacceptable