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: I did get to finish it before I was caught out."The pages separated stiffly under his exploring fingers as if the volume had not been opened for a long time. Choices: 1. I was caught out before I finished it. 2. I was not caught out until after I had finished. 3. The volume had not been opened for over 50 years.

3