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: If, for example, there were no benefits of reducing PM concentrations below the proposed PM2. Choices: 1. To give an example, if lowering PM concentrations below the suggested PM2 provided no benefits. 2. This doesn't give an example. 3. Then this would mean that we need to start from the beginning again.

3