Potassium, Germanium, Boron, Gallium, Oxygen, Cobalt, Beryllium, Hydrogen, Silicon, Chlorine, Scandium, Neon, Carbon, Nickel, Iron, Phosphorus, Helium, Lithium, Zinc, Sodium, Titanium, Arsenic, Manganese, Vanadium, Aluminium, Argon, Sulfur, Copper, Chromium, Fluorine, Calcium, Nitrogen. Is "Magnesium" in the previous list? 
Provide no explanation, directly answer with only "Yes." or "No."