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: Paul Samuelson had good reasons for beginning his textbook with Keynesian analysis. Choices:  1. Paul's reason is that it was the first lesson. 2. Paul put the Mayans in the front of the textbook. 3. Paul had good reason for the Keynesian analysis in his textbook.

2