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: Animal testing
 Argument: Allegations of animal abuse are reviewed by pier board.
Example Output: neutral

Example Input: Topic: Underground nuclear waste storage
 Argument: Underground nuclear waste storage is safest option.
Example Output: in favor

Example Input: Topic: Gay marriage
 Argument: Marriage is mainly for reproduction; can't include gays.
Example Output:
against