In summer 666 , Yeon Gaesomun died and was initially succeeded as " Dae Mangniji " by his oldest son Yeon Namsaeng .
Head entity: yeon gaesomun Q701717 4 5
Tail entity: yeon namsaeng Q707639 20 21
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22