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 had seen Jon stab one of the whipmasters with it the night before. Choices:  1. Jon stabbed the whipmaster with a fire poker.  2. He was not aware that Jon had stabbed a whipmaster with it.  3. He witnessed Jon stab a whipmaster the previous night. 

2