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: EPA acknowledges these uncertainties; however, for this analysis, we assume a causal relationship between exposure to elevated PM and premature mortality, based on the consistent evidence of a correlation between PM and mortality reported in the scientific literature. Choices: 1. EPA doesn't acknowledge any relationship between exposure to elevated PM and premature death. 2. Based on consistent evidence, EPA assumes a causal relationship between exposure to elevated PM and early death. 3. Elevated PM exposure can cause death within two years.

3