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: In many isolated regions, meanwhile, last-ditch defences in the form of round stone towers were built, a few of which are still inhabited today. Choices:  1. In many isolated regions the remains of the soldiers were also found in the round stone towers. 2. A few of the last-ditch defences are still inhabited today. 3. All of the round stone towers were torn down long ago.

3