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".

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

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

Topic: Legalization of drugs
Argument: Individuals have the right to control their bodies and consume drugs.
in favor