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: Susan knows of this, I am sure. Choices:  1. I'm sure Susan knows about this. 2. I am sure Susan has no idea. 3. I'm sure Susan knows about the battle.

2