Statistics for Cities by Element Symbols

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Hint	City	% Correct
Helium + Iron + Iodine	Hefei	100%
Actinium + Carbon + Radium	Accra	93%
Carbon + Helium + Nitrogen + Sodium + Iodine	Chennai	93%
Potassium + Argon + Actinium + Hydrogen + Iodine	Karachi	93%
Boron + Oganesson + Oxygen + Tantalum	Bogotá	87%
Calcium + Iridium + Oxygen	Cairo	87%
Carbon + Argon + Actinium + Arsenic	Caracas	87%
Hydrogen + Argon + Bismuth + Nitrogen	Harbin	87%
Molybdenum + Scandium + Oxygen + Tungsten	Moscow	87%
Phosphorus + Argon + Iodine + Sulfur	Paris	87%
Rhenium + Carbon + Iodine + Iron	Recife	87%
Silicon + Nitrogen + Gallium + Polonium + Rhenium	Singapore	87%
Carbon + Hydrogen + Iodine + Carbon + Silver + Oxygen	Chicago	80%
Sodium + Iridium + Oxygen + Bismuth	Nairobi	80%
Plutonium + Neon	Pune	80%
Tellurium + Hydrogen + Radium + Nitrogen	Tehran	80%
Astatine + Helium + Nitrogen + Sulfur	Athens	73%
Boron + Erbium + Lithium + Nitrogen	Berlin	73%
Carbon + Helium + Nitrogen + Gadolinium + Uranium	Chengdu	73%
Lanthanum + Holmium + Rhenium	Lahore	73%
Carbon + Americium + Phosphorus + Indium + Arsenic	Campinas	67%
Potassium + Americium + Protactinium + Lanthanum	Kampala	67%
Lutetium + Carbon + Potassium + Nobelium + Tungsten	Lucknow	67%
Radium + Tungsten + Aluminum + Phosphorus + Iodine + Neodymium + Iodine	Rawalpindi	67%
Astatine + Lanthanum + Nitrogen + Tantalum	Atlanta	60%
Potassium + Yttrium + Iodine + Vanadium	Kyiv	60%