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: I heard footsteps on my tail- I knew it was the men in black. Choices:  1. I heard the spies behind me. 2. It was silent behind me. 3. I heard people behind me.

2