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". 

Q: Topic: US offshore oil drilling
 Argument: Offshore drilling is very valuable to the US economy.

A: in favor
****
Q: Topic: Needle exchanges
 Argument: Needle exchanges protect public, not just drug addicts.

A: in favor
****
Q: Topic: Full-body scanners at airports
 Argument: There are better alternatives to body scanners at airports.

A:
against
****