Teacher: 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". 
Teacher: Now, understand the problem? If you are still confused, see the following example:
Topic: Three Gorges Dam
 Argument: The Three Gorges Dam is a cause of corruption.
Solution: against
Reason: Here, argument is against the given topic, three gorges dam. Hence, the answer is "against".

Now, solve this instance: Topic: Banning cell phones in cars
 Argument: Cell phone use in cars is unnecessary; people went without them before.
Student:
in favor