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: His four years here were the most exciting part of his whole life and could have been the happiest part of his professional one. Choices: 1. His time here was the worst time of his life. 2. His time here was the best time of his life. 3. His time here was the best time of his life an he wanted to stay there professionally.

3