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: In order to provide some insight into the potential importance of the key elements underlying estimates of the benefits of reducing SOx and NOx emissions, we developed an Alternative Estimate using different choices of data, methods, and assumptions that are detailed in Section II (Analytical Approach). Choices: 1. There is no way to estimate the benefits of reducing emissions. 2. The benefits of reducing some emissions are measured in Section II. 3. NOx emissions often come from coal fired power plants.

3