Potassium, Yttrium, Bromine, Iron, Cerium, Scandium, Ruthenium, Phosphorus, Selenium, Fluorine, Hydrogen, Terbium, Promethium, Vanadium, Arsenic, Molybdenum, Calcium, Krypton, Nickel, Sodium, Sulfur, Rhodium, Argon, Aluminium, Samarium, Germanium, Lanthanum, Caesium, Tin, Indium, Palladium, Silver, Strontium, Cadmium, Titanium, Cobalt, Gadolinium, Antimony, Praseodymium, Lithium, Magnesium, Manganese, Rubidium, Gallium, Technetium, Oxygen, Silicon, Helium, Zinc, Barium, Neodymium, Zirconium, Iodine, Niobium, Neon, Xenon, Beryllium, Europium, Carbon, Chromium, Tellurium, Boron, Copper, Nitrogen. Is "Yttrium" in the previous list? 
Provide no explanation, directly answer with only "Yes." or "No."