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: Pornography
Argument: Pornography does not denigrate/harm women.
in favor

Topic: New START Treaty
Argument: Russia will build-up nuclear arms without New START.
in favor

Topic: Solar energy
Argument: Nuclear power is a more potent and efficient source of energy.
against