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: Experience has also shown that specific site issues, while often a planning challenge, have not prevented installations of FGD systems. Choices:  1. Experience shows that the specific site issues don't prevent FGD from being installed. 2. Experience shows that the specific site issues prevent FGD from being installed. 3. Experience shows that the specific site issues don't prevent FGD from being installed in coal mines.

2