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: More troops to Afghanistan under Obama
 Argument: Afg is backward, cannot be salvaged by US.
against

Topic: Mandatory military service
 Argument: Mandatory service fosters militarism.

against