The late 4th - early 5th century poet Nonnus gives Thaumas and Electra two children , Iris , and the river Hydaspes . Nonnus , " Dionysiaca " 26.358–362 .
Head entity: thaumas Q326767 10
Tail entity: iris Q184570 16
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22