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