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: Most of the graves are recent, barely a century old, but the cone-roofed, timeworn monument seen down the valley dates from the Second Temple period over 2,000 years ago. Choices:  1. The monument was constructed in the past 20 years. 2. The monument was there long before the graves. 3. Most of the graves were all placed there in the past century.

1