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". 

Example Input: Topic: Needle exchanges
 Argument: Needle exchanges protect public, not just drug addicts.
Example Output: in favor

Example Input: Topic: Kangaroo culling in Australia
 Argument: Culling Kangaroo tarnishes the image of Australia around the world.
Example Output: against

Example Input: Topic: Veal
 Argument: Grain diets are rare in veal because it produces tougher meat.
Example Output:
neutral