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: Guantanamo Bay detention center
 Argument: Closing Guantanamo and opening a new one elsewhere is a PR stunt.
Example Output: against

Example Input: Topic: Wind energy
 Argument: Wind energy production is inconsistent relative to demand.
Example Output: against

Example Input: Topic: Needle exchanges
 Argument: Needle exchanges decrease infections and therefore costs.
Example Output:
in favor