The war began in , almost a century after Sauron had deceived the Noldor smiths of Eregion and had secretly forged the One Ring to rule over the other Rings of Power .
Head entity: rings of power Q1406822 29 30 31
Tail entity: one ring Q19852 22 23
Relation (head \u2192 tail): P361
Inverse relation (tail \u2192 head): P527