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: Enhanced interrogation techniques
 Argument: US prosecuted foreign governments for waterboarding.
[EX A]: against

[EX Q]: Topic: Kyoto Protocol
 Argument: It is unimportant for the US to join Kyoto now.
[EX A]: against

[EX Q]: Topic: NATO expansion
 Argument: NATO expansion will improve the operational capacity of NATO.
[EX A]:
in favor