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: Professor Aleinikoff has experience both in the public sector and in academia that has provided him with expertise in immigration law. Choices: 1. Professor Aleinikoff lacks experience in both the public sector and academia. 2. Professor Aleinikoff's experience in both academia and the pubic sector has provided him with expertise in immigration law. 3. Immigration law has become the favorite subject for professor Aleinikoff.

3