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: He's neither immune to the professor's charm nor untroubled by what the professor says about the Northern  a culture war in which Yankees imposed their imperialist and capitalist will on the agrarian South, just as they had done to the Irish and Scots. Choices:  1. The professor was talking about the East and the West. 2. The professor was talking about the North and the South. 3. The professor was talking about the North and the South; it was a subject that he is passionate about.

1