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: At first they suspected rival slave traders or mercenaries hired by the other cities to corner the market on the trade, but all the traders were being killed one caravan at a time. Choices:  1. The mercenaries were hired by other cities to help with trading slaves. 2. The mercenaries were hired by other cities to help with trade. 3. The mercenaries were fired by the other cities.

3