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: US Renewable Electricity Standard
 Argument: Renewable electricity standard increases energy prices - unpopular.
Example Output: against

Example Input: Topic: Random sobriety tests for drivers
 Argument: Random breath tests create slippery slope to expanding police powers.
Example Output: against

Example Input: Topic: Banning vuvuzela horns at the 2010 World Cup
 Argument: Vuvuzela sales are economically beneficial in S. Africa.
Example Output:
against