Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
Input: Statement: He looked back with his kindly, shrewd glance. Choices: 1. His eyes were sharp and kind as he looked behind him. 2. He looked forward with his mean, dull stare.  3. He looked back at the girl as she was walking away.

3