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arsenic → IsA → natural element	0.52
fluoride → IsA → natural element	0.44
gold → IsA → natural element	0.38
sulfur → IsA → natural element	0.37
mercury → IsA → natural element	0.37
zinc → IsA → natural element	0.36
titanium → IsA → natural element	0.34
iodine → IsA → natural element	0.29
iron → IsA → natural element	0.29
solar panel → MadeOf → natural element	0.27
lead → IsA → natural element	0.24