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: Health insurance cooperatives
 Argument: Co-ops lack scale to negotiate prices of drugs, services.
against

Topic: Fish farming ban
 Argument: Fish feel pain and should not be made to suffer.
in favor

Topic: Full-body scanners at airports
 Argument: Full-body scanners are very expensive.

against