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: Education vouchers
Argument: Vouchers promote innovation and specialisation.

Ex Output:
in favor

Ex Input:
Topic: UN Security Council veto
Argument: Vietnam supports banning UN security council veto power.

Ex Output:
in favor

Ex Input:
Topic: New START Treaty
Argument: New START Treaty gives more to Russia than US.

Ex Output:
against