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: He also suggested that his findings may point the way toward behavioral therapy for the syndrome. Choices: 1. His investigations help toward possible therapy for that syndrome. 2. His findings proved that behavioral therapy doesn't help at all to alleviate the symptoms of this syndrome. 3. Scientists started investigating behavioral therapy in the 19th century.

3