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".

topic: Tidal energy
argument: Tidal turbines can kill marine wildlife.
against

topic: Geoengineering, solar shading
argument: Solar shading may warm the tropopause and lower stratosphere.
against

topic: Turkey EU membership
argument: Turkey's EU membership would help the fight against terrorism

in favor