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: Banning vuvuzela horns at the 2010 World Cup
 Argument: They are a source of headaches.
[EX A]: in favor

[EX Q]: Topic: Education vouchers
 Argument: Public schools are being improved without vouchers.
[EX A]: against

[EX Q]: Topic: Vegetarianism
 Argument: Human and animal differences do not justify speciism/discrimination.
[EX A]:
in favor