Definition: In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.
Input: Statement: In numerous studies, they have documented a deep paradox about human relations--persons get along, but people don't. Choices:  1. They studied human relationships. 2. They studied human relationships in America. 3. They studied animal relationships.

3