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". 

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

Ex Output:
against


Ex Input:
Topic: High-speed rail
 Argument: Unlike automobiles, rail fosters a sense of community.

Ex Output:
in favor


Ex Input:
Topic: Geoengineering, iron fertilization of algae blooms
 Argument: Global warming kills algae, worsens warming; iron fertilization helps.

Ex Output:

in favor