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 Q]: Topic: Medical marijuana dispensaries
 Argument: That marijuana is herbal does not mean it is safe.
[EX A]: against

[EX Q]: Topic: Comprehensive Nuclear-Test-Ban Treaty
 Argument: Comprehensive Test Ban Treaty still relevant after Cold War.
[EX A]: in favor

[EX Q]: Topic: Tibet independence
 Argument: The United Nations does charter discourages disruptions of national unity such as a move to Tibetan Independence.
[EX A]:
against