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: Funding transparency for TV issue ads in elections
 Argument: Anonymity is essential to free speech in modern democracy.
against

Topic: Carbon emissions trading
 Argument: Emissions trading encourages investments in best technologies.
in favor

Topic: Gays in the US military
 Argument: Privacy issues with gays in the military can be resolved.

in favor