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: The ship was sunk to collect the insurance.

SOLUTION: acceptable

PROBLEM: I am not certain about whether he will go or not.

SOLUTION: acceptable

PROBLEM: Sally might be pregnant, and I know a girl who definitely is pregnant.

SOLUTION:
acceptable