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: Fairness Doctrine
 Argument: Fairness Doctrine would counter conservative domination of radio.
in favor

Topic: Hydrogen vehicles
 Argument: It's OK to use more energy to make hydrogen than is obtained out.
in favor

Topic: US and NATO intervention in Libya
 Argument: President's action in Libya violates his campaign pledges.

against