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". 

Topic: No-fly zone over Libya
 Argument: No fly zone in Libya prevents a massacre.
in favor

Topic: UN Security Council veto
 Argument: UN SC veto need not be abolished, but extended to more countries.
in favor

Topic: Fish farming ban
 Argument: Fish farms do more to protect wild fish than to harm them.

in favor