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: Gene patents
 Argument: Little evidence exists that gene patents hurt research.
in favor

Topic: Banning cell phones in cars
 Argument: More difficult to enforce hands-free cell phone ban.
neutral

Topic: Hate crime laws
 Argument: Hate crime laws provide special protections like other laws do.

in favor