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: Hydrogen vehicles
 Argument: Hydrogen is non-toxic, unlike most fossil fuels.

Ex Output:
in favor


Ex Input:
Topic: Mandatory labeling of genetically modified foods
 Argument: Insects are likely to become resistant to GM crops.

Ex Output:
against


Ex Input:
Topic: Open primaries
 Argument: Open primaries disincentivize engagement by core party activists.

Ex Output:

against