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: Mine Ban Treaty (Ottawa Treaty)
 Argument: Geneva Conventions regulates use of landmines; ban is excessive.

A: against
****
Q: Topic: Gay marriage
 Argument: Gay marriage threatens cultural tradition of marriage.

A: against
****
Q: Topic: Carbon capture and storage
 Argument: The transportation of captured carbon can be very expensive.

A:
against
****