Japan
type: Concept
preferred label: ژاپن @fa
related: Okinawa Trough

East China Sea
type: Concept
preferred label: دریای چین شرقی @fa
related: Okinawa Trough

Okinawa Trough
type: Concept
broader: Northwest Pacific
preferred label: گودال اوکیناوا @fa
related: Japan
related: East China Sea

Northwest Pacific
type: Concept
narrower: Okinawa Trough
preferred label: آرام شمال غربی @fa