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: Fish farming ban
 Argument: Fish farms do more to protect wild fish than to harm them.
[EX A]: in favor

[EX Q]: Topic: NATO expansion
 Argument: The expense of NATO expansion is marginal when compared to the defence budgets of the major NATO States.
[EX A]: in favor

[EX Q]: Topic: Privatizing social security
 Argument: Privatizing social security helps the poor.
[EX A]:
in favor