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". 
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Question: Topic: Geoengineering
 Argument: Many geoengineering solutions cut atmospheric greenhouse gases.

Answer: in favor


Question: Topic: European missile defense
 Argument: European missile defenses would not counter Russia-to-US attack.

Answer: against


Question: Topic: Hydroelectric dams
 Argument: Dams are economically viable and often highly profitable.

Answer:
in favor