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: Hydrogen vehicles
 Argument: Hydrogen cars will help end foreign oil dependencies.
Example Output: in favor

Example Input: Topic: Assault weapons ban in the United States
 Argument: The 1994 US assault weapons ban significantly decreased use.
Example Output: in favor

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