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: Ending US sanctions on Cuba
 Argument: Sanctioning Cuba is appropriate punishment for its flouting the UN.

Answer: against


Question: Topic: Natural gas
 Argument: Natural gas will lower fossil fuel prices and increase consumption.

Answer: in favor


Question: Topic: Guantanamo Bay detention center
 Argument: Conditions at Guantanamo Bay are harmful to detainee mental health.

Answer:
against