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: Estimated Steel Requirement for 500 MWe ACI System. Choices:  1.  Estimated Steel Requirement for 500 MWe ACI System. 2. Estimated Foam Requirement for 100 MWe ACS system. 3. The estimated steel requirement for the system is quite large, indeed.

2