Given the Target and Argument texts detect the stance that the argument has towards the topic. There are three types of stances "in favor", "against", and "neutral". 

[EX Q]: Topic: Ending US sanctions on Cuba
 Argument: Sanctions violate the principle of just war.
[EX A]: in favor

[EX Q]: Topic: Gene patents
 Argument: Little evidence exists that gene patents hurt research.
[EX A]: in favor

[EX Q]: Topic: Kyoto Protocol
 Argument: The Kyoto Protocol's emissions targets are unrealistic.
[EX A]:
against