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: Legality of coca production and consumption
 Argument: Coca consumption is most akin to caffeine use.
[EX A]: in favor

[EX Q]: Topic: DREAM Act
 Argument: Illegals cannot use legalized children to gain citizenship.
[EX A]: against

[EX Q]: Topic: Hydrogen vehicles
 Argument: Hydrogen can't be compressed to give sufficient driving range.
[EX A]:
against