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: Is a nuclear Iran intolerable?
 Argument: A nuclear Iran would use oil as a weapon.
against

Topic: Enhanced interrogation techniques
 Argument: Majority of Americans believe harsh interrogations justified.
in favor

Topic: Puerto Rico statehood in America
 Argument: Puerto Rico as colony is unacceptable.

in favor