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: When they arrived there, they met some neighbors from home who told them about a sign saying NO CANADIANS. Choices: 1. They were surprised to learn about the sign warning NO CANADIANS. 2. The neighbors told them about the sign that said NO MEXICANS.  3. Some neighbors told them about the sign against Canadians when they first arrived there.

1