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: Reforestation as a solution to global warming
 Argument: Reforestation can result in release of greenhouse gas Methane.
[EX A]: against

[EX Q]: Topic: Banning Muslim hijab
 Argument: Many Muslim women view the veil as a means to protect their modesty and privacy.
[EX A]: against

[EX Q]: Topic: Geoengineering
 Argument: Geoengineering comes from human hubris; let mother nature work.
[EX A]:
against