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: Carbon emissions trading
 Argument: US cap-and-trade in sulfur dioxidew was succesful.
Example Output: in favor

Example Input: Topic: Restoring American Financial Stability Act of 2010
 Argument: Goldman Sachs fraud case highlighted need for financial reform.
Example Output: in favor

Example Input: Topic: European missile defense
 Argument: Missile defense systems are becoming effective and reliable.
Example Output:
in favor