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 set to work to examine his prison. Choices:  1. The prison was being examined. 2. He stayed far away from the prison, it was never examined. 3. He was exasperated at the thought of the prison, but examined it anyway.

2