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: Catholic Church contraception policy
 Argument: Evil (condoms) should not be used to fight evil (HIV/AIDS).
[EX A]: in favor

[EX Q]: Topic: Banning vuvuzela horns at the 2010 World Cup
 Argument: Ear plugs can effectively limit any damage from vuvuzela.
[EX A]: against

[EX Q]: Topic: Nuclear energy
 Argument: Nuclear energy economies of scale are improving.
[EX A]:
in favor