Edo River
E421236
The Edo River is a significant river in Japan’s Kantō region that flows through the Tokyo metropolitan area and has historically been important for transportation, flood control, and regional development.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Edo River canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T3014381 — 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: Edo River Context triple: [Tone River, majorTributary, Edo River]
-
A.
Segama River
The Segama River is one of the longest and most significant rivers in the Malaysian state of Sabah, known for flowing through rich rainforest and wildlife habitats in eastern Borneo.
-
B.
Kanda River
The Kanda River is a historically significant urban river in Tokyo, Japan, flowing through several central wards and playing an important role in the city’s drainage and flood control systems.
-
C.
Iori River
The Iori River is a river in the South Caucasus that flows through eastern Georgia and parts of Azerbaijan before joining the Kura (Mtkvari) River.
-
D.
Naka River
Naka River is a river in Japan known for lending its name to the Imperial Japanese Navy light cruiser Naka.
-
E.
Moruya River
Moruya River is a coastal river in New South Wales, Australia, that flows through the town of Moruya before reaching the Tasman Sea.
- 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: Edo River Target entity description: The Edo River is a significant river in Japan’s Kantō region that flows through the Tokyo metropolitan area and has historically been important for transportation, flood control, and regional development.
-
A.
Segama River
The Segama River is one of the longest and most significant rivers in the Malaysian state of Sabah, known for flowing through rich rainforest and wildlife habitats in eastern Borneo.
-
B.
Kanda River
The Kanda River is a historically significant urban river in Tokyo, Japan, flowing through several central wards and playing an important role in the city’s drainage and flood control systems.
-
C.
Iori River
The Iori River is a river in the South Caucasus that flows through eastern Georgia and parts of Azerbaijan before joining the Kura (Mtkvari) River.
-
D.
Naka River
Naka River is a river in Japan known for lending its name to the Imperial Japanese Navy light cruiser Naka.
-
E.
Moruya River
Moruya River is a coastal river in New South Wales, Australia, that flows through the town of Moruya before reaching the Tasman Sea.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| country | Japan ⓘ |
| dischargesInto | Tokyo Bay ⓘ |
| flowsThrough |
Chiba Prefecture
NERFINISHED
ⓘ
Saitama Prefecture NERFINISHED ⓘ Tokyo Prefecture ⓘ
surface form:
Tokyo Metropolis
|
| hasFloodControlInfrastructure |
embankments
ⓘ
floodgates ⓘ levees ⓘ |
| hasFunction | drainage channel for the Tone River system ⓘ |
| hasJapaneseName | 江戸川 NERFINISHED ⓘ |
| historicalRole |
important for regional development in the Kantō region
ⓘ
important waterway for transportation in the Edo period ⓘ key route for moving goods to and from Edo (Tokyo) ⓘ |
| isTributaryOf |
Tokyo Bay
ⓘ
surface form:
Tokyo Bay coastal system
|
| locatedIn | Kantō region ⓘ |
| locatedNear | Tokyo metropolitan area ⓘ |
| mouthLocatedIn | Tokyo Bay ⓘ |
| namedAfter | Edo (former name of Tokyo) NERFINISHED ⓘ |
| partOf |
Tone River
ⓘ
surface form:
Tone River system
|
| regionDevelopedAlong |
Tokyo metropolitan area
ⓘ
eastern Saitama Prefecture ⓘ northwestern Chiba Prefecture ⓘ |
| separates |
Chiba Prefecture
NERFINISHED
ⓘ
Tokyo Prefecture ⓘ
surface form:
Tokyo Metropolis
|
| sourceRiver | Tone River NERFINISHED ⓘ |
| usedFor |
flood control
ⓘ
irrigation ⓘ recreation ⓘ transportation ⓘ |
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: Edo River Description of subject: The Edo River is a significant river in Japan’s Kantō region that flows through the Tokyo metropolitan area and has historically been important for transportation, flood control, and regional development.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.