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". 

Ex Input:
Topic: Public health insurance option
 Argument: Insurers should not be trusted with sole control of health insurance.

Ex Output:
in favor


Ex Input:
Topic: Lowering US drinking age from 21 to 18
 Argument: 21 drinking-age general lowers under-age drinking.

Ex Output:
against


Ex Input:
Topic: Free trade
 Argument: Free markets and trade benefit the environment.

Ex Output:

in favor