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: Vehicle fuel economy standards
 Argument: Fuel economy standards do not increase the cost of making cars.
Example Output: in favor

Example Input: Topic: NATO expansion
 Argument: NATO expansion can only lead to the overstretching of the organisation and thus the undermining of stability for the entirety of Europe.
Example Output: against

Example Input: Topic: Driftnet ban
 Argument: Drifnet by-catch has a disastrous impact on ocean life.
Example Output:
against