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