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".

Topic: 700 mile US Mexico border fence
Argument: Building a border fence is not racism.
in favor

Topic: Underground nuclear waste storage
Argument: Nuclear waste storage requires huge state subsidies.
against

Topic: Geoengineering, solar shading
Argument: Geoengineering concepts dampen public will to cut emissions.
against