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". 

Example Input: Topic: Obama, meeting with hostile foreign leaders without preconditions
 Argument: Iranian leaders are evil; wrong to meet with them.
Example Output: against

Example Input: Topic: Hydrogen vehicles
 Argument: It's OK to use more energy to make hydrogen than is obtained out.
Example Output: in favor

Example Input: Topic: DREAM Act
 Argument: Illegals cannot use legalized children to gain citizenship.
Example Output:
against