Q--Does Mercury make for good Slip N Slide material?
A--My step-by-step reasoning: The Slip N Slide was an outdoor water slide toy. Mercury is a thick liquid at room temperature. Mercury is poisonous and used to kill hatters that lined their hats with the substance.
So, the answer is no.

Q--Does horseradish have a fetlock?
A--My step-by-step reasoning: Horseradish is a type of plant that is used as a condiment. Fetlock is the common name used for a joint found in horses.
So, the answer is no.

Q--Would WWF be angrier if you killed koala instead of black swan?
A--My step-by-step reasoning: The WWF is an international organization that works for the preservation of animals. Black swans are designated as least concern species meaning they are not close to being endangered. Koalas are designated asvulnerable to extinctionjust a step above endangered.
So, the answer is yes.

Q--Is LG Electronics located in a city with an official bird that has a purplish/blue tail?
A--
My step-by-step reasoning: LG Electronics is headquarted in Seoul. The official bird of Seoul is the Korean magpie. The Korean magpie has a purplish/blue colored tail.
So, the answer is yes.