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: Needle exchanges
Argument: Drug dealers sell drugs near needle exchanges.

Ex Output:
against

Ex Input:
Topic: Withdrawing from Iraq
Argument: That coalition troops are not the cause of violence is shown by the fact that most attacks are not against them.

Ex Output:
against

Ex Input:
Topic: Hydroelectric dams
Argument: The world's rivers are covered with dams; room for expansion is limited.

Ex Output:
against