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: Is Wikipedia valuable?
 Argument: Many incomplete stub articles persist on Wikipedia.'.
[EX A]: against

[EX Q]: Topic: Ending US sanctions on Cuba
 Argument: Sanctioning Cuba is appropriate punishment for its flouting the UN.
[EX A]: against

[EX Q]: Topic: Israeli military assault in Gaza
 Argument: Israeli precision strikes sought to minimize civilian deaths.
[EX A]:
in favor