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: US health care reform
 Argument: US health care law ends pre-existing conditions discrimination.
Example Output: in favor

Example Input: Topic: European Union Expansion
 Argument: European Union should include all of Europe; it's in their name.
Example Output: in favor

Example Input: Topic: Legalization of adult incest
 Argument: Incest taboo is due to evolutionary inclination for variation.
Example Output:
neutral