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: Algae biofuel
 Argument: Algae from coal ties the biofuel to fossil fuels.

SOLUTION: neutral

PROBLEM: Topic: Corn ethanol
 Argument: Corn ethanol is inferior to sugar ethanol.

SOLUTION: against

PROBLEM: Topic: Underground nuclear waste storage
 Argument: Underground storage will never overcome societal fears.

SOLUTION:
against