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: Bombing Hiroshima and Nagasaki
 Argument: Hiroshima was a strategic military headquarters and target.
in favor

Topic: Castration of sex offenders
 Argument: Castration exposes sex offenders to side effects.
against

Topic: New START Treaty
 Argument: New START is not adequately verifiable.

against