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". 

Q: Topic: Prostitution
 Argument: By worsening HIV/AIDS, prostitution will devastate societies.

A: against
****
Q: Topic: Vegetarianism
 Argument: Offering rights to animals based on evolution is a slippery slope.

A: against
****
Q: Topic: Funding transparency for TV issue ads in elections
 Argument: If you're going to attack a candidate, reveal your identity.

A:
in favor
****