TASK DEFINITION: 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". 
PROBLEM: Topic: Geoengineering
 Argument: Geoengineering may whiten skies, harm human psychology.

SOLUTION: against

PROBLEM: Topic: Assault weapons ban in the United States
 Argument: There are adequate alternatives to assault weapons for self-defense.

SOLUTION: in favor

PROBLEM: Topic: Free trade
 Argument: Free trade sacrifices national unity to economics.

SOLUTION:
against