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: Boycott of 2008 Olympics in China
 Argument: China's unwillingness influence Burma's crisis justifies an Olympic Boycott.
in favor

Topic: Geoengineering, solar shading
 Argument: Solar shading would reduce sunlight received by plants.
against

Topic: No Child Left Behind Act
 Argument: No Child Left Behind encourages parents to engage more actively.

in favor