You will be given a topic and an argument. Decide the argument's stance towards that topic. The argument's stance is in favor or against the topic. If the argument supports that topic, answer with "in favor"; otherwise, if the argument opposes the topic, answer with "against".

Q: topic: Solar energy
argument: Nuclear power is a more potent and efficient source of energy.

A: against
****
Q: topic: Hydrogen vehicles
argument: Electric car battery technology and costs are improving rapidly

A: against
****
Q: topic: Right to bear arms in the US
argument: America's modern military makes the militia unnecessary for national security.

A:
against
****