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: This was the 10 th study since 1975--and all studies showed similar problems. Choices: 1. The results of the 9th study were vastly different from the rest. 2. The second study was conducted 5 years after the first study. 3. All of the 10 studies since 1975, identified similar issues.

2