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: Lowering US drinking age from 21 to 18
 Argument: 21 drinking-age general lowers under-age drinking.
Example Output: against

Example Input: Topic: Public health insurance option
 Argument: Public insurance delivers same quality insurance at a lower price.
Example Output: in favor

Example Input: Topic: War on Drugs
 Argument: The state is justified in protecting society from drug-users.
Example Output:
in favor