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: Should Hugo Chávez focus on the private sector more than social spending?
 Argument: The lack of support to private sector makes Venezuela unattractive for investments.
in favor

Topic: Mandatory labeling of genetically modified foods
 Argument: Labeling GM foods applies precautionary principle to unknown risks.
in favor

Topic: Earmarks
 Argument: Earmarks are often unrelated to legislation; holds up bill.

against

