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: Big government
 Argument: Government avoids pitfalls of focus on profits.
in favor

Topic: Geoengineering, iron fertilization of algae blooms
 Argument: Best practices in iron fertilization can ensure effectiveness.
in favor

Topic: Hydroelectric dams
 Argument: Dams eliminate forests that absorb CO2 from the atmosphere.

against