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: Vegetarianism
 Argument: Offering rights to animals based on evolution is a slippery slope.

A: against
****
Q: Topic: High-speed rail
 Argument: High speed rail is a great tourist attraction.

A: in favor
****
Q: Topic: Prostitution
 Argument: Legalizing prostitution won't substantially reduce HIV/AIDS risks.

A:
against
****