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: Natural gas vehicles
 Argument: Odorless natural gas can escape detection risking fire/explosion.

A: against
****
Q: Topic: Mandatory calorie counts on menus
 Argument: Fear of government should not obstruct calorie counts on menus.

A: in favor
****
Q: Topic: Merit pay for teachers
 Argument: Past examples of merit pay for teachers have failed.

A:
against
****