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: Banning vuvuzela horns at the 2010 World Cup
 Argument: Vuvuzelas can be used as weapons.
in favor

Topic: Cellulosic ethanol
 Argument: Cellulosic ethanol can generate good-paying jobs.
in favor

Topic: Ground zero mosque
 Argument: Developers have right to build ground zero mosque, but should not.

against