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: Abolition of nuclear weapons
 Argument: It's not possible to abolish nuclear weapons now that the are at large.
[EX A]: against

[EX Q]: Topic: Solar energy
 Argument: Solar energy does not damage air quality.
[EX A]: in favor

[EX Q]: Topic: Guantanamo Bay detention center
 Argument: Closing Guantanamo and opening a new one elsewhere is a PR stunt.
[EX A]:
against