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: Wave power
 Argument: Under-water wave power systems avoid aesthetic concerns.
in favor

Topic: Banning cell phones in cars
 Argument: Markets are better at regulating cell phone use in cars.
against

Topic: College football playoffs
 Argument: Every game is important and exciting under BCS.

in favor