instruction:
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". 
question:
Topic: Algae biofuel
 Argument: Algae can be produced locally for food and fuel.
answer:
in favor


question:
Topic: 700 mile US Mexico border fence
 Argument: The 700 wall cannot be compared to the Berlin wall.
answer:
neutral


question:
Topic: Vehicle fuel economy standards
 Argument: Vehicle fuel economy standards can increase vehicle deaths.
answer:

against