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: Three Gorges Dam
 Argument: Floating garbage is piling up behind the TGD.

SOLUTION: against

PROBLEM: Topic: Two-state solution to Israeli-Palestinian conflict
 Argument: A two-state solution will not assuage Iran.

SOLUTION: against

PROBLEM: Topic: Compulsory voting
 Argument: Mandatory voting would reduce polarization.

SOLUTION:
in favor