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: Is Wikipedia valuable?
 Argument: Many incomplete stub articles persist on Wikipedia.'.
Example Output: against

Example Input: Topic: Muhammad cartoons controversy
 Argument: The Jylands-Posten cartoons created an international impression of Denmark as Xenophobic.
Example Output: against

Example Input: Topic: War on Drugs
 Argument: War on Drugs worsens cartel violence.
Example Output:
against