Onga River
E689891
The Onga River is a major river in Fukuoka Prefecture on Japan’s Kyushu island, known for flowing through several municipalities and supporting regional agriculture and industry.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Onga River canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6433535 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Onga River Context triple: [Iizuka, Fukuoka, Japan, hasRiver, Onga River]
-
A.
La Leona River
La Leona River is a Patagonian river in southern Argentina that drains Viedma Lake and flows toward Lake Argentino, known for its scenic landscapes and proximity to Los Glaciares National Park.
-
B.
Unga River
The Unga River is a lesser-known river in Irkutsk Oblast, Russia, forming part of the Kirenga River basin within the broader Lena River watershed in Siberia.
-
C.
Samiria River
The Samiria River is a major blackwater tributary of the Amazon in northeastern Peru, renowned for its rich biodiversity and extensive flooded forests.
-
D.
Jamanxim River
The Jamanxim River is a significant waterway in the Brazilian Amazon that flows through Pará state and contributes to the Tapajós River system.
-
E.
Nymboida River
The Nymboida River is a major freshwater river in northern New South Wales, Australia, renowned for its rugged gorges, whitewater rafting, and role in regional water supply and hydroelectric power generation.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Onga River Target entity description: The Onga River is a major river in Fukuoka Prefecture on Japan’s Kyushu island, known for flowing through several municipalities and supporting regional agriculture and industry.
-
A.
La Leona River
La Leona River is a Patagonian river in southern Argentina that drains Viedma Lake and flows toward Lake Argentino, known for its scenic landscapes and proximity to Los Glaciares National Park.
-
B.
Unga River
The Unga River is a lesser-known river in Irkutsk Oblast, Russia, forming part of the Kirenga River basin within the broader Lena River watershed in Siberia.
-
C.
Samiria River
The Samiria River is a major blackwater tributary of the Amazon in northeastern Peru, renowned for its rich biodiversity and extensive flooded forests.
-
D.
Jamanxim River
The Jamanxim River is a significant waterway in the Brazilian Amazon that flows through Pará state and contributes to the Tapajós River system.
-
E.
Nymboida River
The Nymboida River is a major freshwater river in northern New South Wales, Australia, renowned for its rugged gorges, whitewater rafting, and role in regional water supply and hydroelectric power generation.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
river ⓘ |
| basinLocatedIn |
Fukuoka Prefecture
ⓘ
Saga Prefecture ⓘ |
| continent | Asia ⓘ |
| country | Japan ⓘ |
| flowsInto | Sea of Japan ⓘ |
| flowsNear | Kitakyushu ⓘ |
| flowsThrough |
Ashiya
ⓘ
Iizuka ⓘ Kurate ⓘ Mizumaki ⓘ Nogata ⓘ
linked to:
Nōgata
Onga ⓘ Tagawa ⓘ |
| flowsThroughPrefecture |
Fukuoka Prefecture
ⓘ
Saga Prefecture ⓘ |
| hasBasin | Onga River basin ⓘ |
| hasEconomicRole |
supports coal-mining region historically
ⓘ
supports horticulture ⓘ supports manufacturing sector ⓘ supports rice cultivation ⓘ |
| hasEnvironmentalConcern |
flood risk management
ⓘ
water quality management ⓘ |
| hasInfrastructure |
dams
ⓘ
irrigation canals ⓘ levees ⓘ weirs ⓘ |
| hasUse |
fishing
ⓘ
recreation ⓘ riverside parks ⓘ |
| isKnownFor |
flowing through multiple municipalities in Fukuoka Prefecture
ⓘ
supporting regional agriculture ⓘ supporting regional industry ⓘ |
| isManagedBy |
Japanese national government
ⓘ
linked to:
Government of Japan
local governments of Fukuoka Prefecture ⓘ |
| locatedIn | Fukuoka Prefecture ⓘ |
| locatedInRegion |
Kyushu region
ⓘ
linked to:
Kyushu
|
| locatedOnIsland | Kyushu ⓘ |
| mouthCountry | Japan ⓘ |
| riverSystem | Onga River system ⓘ |
| supports |
regional agriculture
ⓘ
regional industry ⓘ |
| usedFor |
flood control
ⓘ
hydroelectric power generation ⓘ industrial water supply ⓘ irrigation ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Onga River Description of subject: The Onga River is a major river in Fukuoka Prefecture on Japan’s Kyushu island, known for flowing through several municipalities and supporting regional agriculture and industry.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.