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: Carbon emissions trading
 Argument: US cap-and-trade in sulfur dioxidew was succesful.
[EX A]: in favor

[EX Q]: Topic: Abortion
 Argument: If a fetus was defined as a person, the legal shifts would be too dramatic.
[EX A]: in favor

[EX Q]: Topic: South Ossetia independence
 Argument: The Ossetian people have a divided, non-contiguous history.
[EX A]:
neutral