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: But the demand for whale oil would decline steeply after 1859, with the discovery of oil in Pennsylvania and the start of the American Civil War in 1860. Choices:  1. Whale oil continued to rise after the end of the American Civil War. 2. The discovery of oil in Pennsylvania led others to believe that more oil could be found in its neighboring states. 3. The discovery of oil in Pennsylvania created a decline in whale oil.

1