Edogawa River
E752592
The Edogawa River is a major river in the Kantō region of Japan that flows between Chiba and Saitama prefectures before emptying into Tokyo Bay.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Edogawa River canonical | 11 |
| Edogawa River system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7998432 — 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: Edogawa River Context triple: [Kashiwa, borderedByRiver, Edogawa River]
-
A.
Inagawa River
The Inagawa River is a river in Japan’s Kansai region that flows through Hyōgo Prefecture, including the city of Amagasaki, before emptying into Osaka Bay.
-
B.
Kamogawa River
The Kamogawa River is a prominent river flowing through Kyoto, Japan, known for its scenic banks lined with traditional teahouses, restaurants, and popular walking paths.
-
C.
Yoshida River
The Yoshida River is a significant waterway flowing through Japan’s Miyagi Prefecture, contributing to the region’s natural landscape and local ecosystems.
-
D.
Okawa River
The Okawa River is a prominent waterway running through Osaka, Japan, known for its scenic riverside views and role as a central stage for major cultural events and festivals.
-
E.
Tsuboi River
Tsuboi River is a river flowing through Kumamoto in Japan’s Kyushu region, known for its role in the city’s landscape and local water management.
- 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: Edogawa River Target entity description: The Edogawa River is a major river in the Kantō region of Japan that flows between Chiba and Saitama prefectures before emptying into Tokyo Bay.
-
A.
Inagawa River
The Inagawa River is a river in Japan’s Kansai region that flows through Hyōgo Prefecture, including the city of Amagasaki, before emptying into Osaka Bay.
-
B.
Kamogawa River
The Kamogawa River is a prominent river flowing through Kyoto, Japan, known for its scenic banks lined with traditional teahouses, restaurants, and popular walking paths.
-
C.
Yoshida River
The Yoshida River is a significant waterway flowing through Japan’s Miyagi Prefecture, contributing to the region’s natural landscape and local ecosystems.
-
D.
Okawa River
The Okawa River is a prominent waterway running through Osaka, Japan, known for its scenic riverside views and role as a central stage for major cultural events and festivals.
-
E.
Tsuboi River
Tsuboi River is a river flowing through Kumamoto in Japan’s Kyushu region, known for its role in the city’s landscape and local water management.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
river ⓘ |
| country | Japan ⓘ |
| drainageBasin |
Kantō Plain
ⓘ
linked to:
Kanto Plain
|
| emptiesInto | Tokyo Bay ⓘ |
| flowsThrough |
Chiba Prefecture
NERFINISHED
ⓘ
Saitama Prefecture ⓘ |
| formsBorderBetween | Chiba Prefecture and Saitama Prefecture ⓘ |
| hasInfrastructure |
bridges
ⓘ
levees ⓘ water gates ⓘ |
| hasUse |
boating
ⓘ
fishing ⓘ flood control ⓘ recreation ⓘ transportation (historically) ⓘ |
| isSubjectOf |
flood control policies in the Kantō region
ⓘ
river management projects in Japan ⓘ |
| locatedIn |
Kantō region
ⓘ
eastern Japan ⓘ |
| locatedNear | Tokyo ⓘ |
| mouthLocation | Tokyo Bay ⓘ |
| namedAfter | Edogawa area ⓘ |
| partOf |
Tokyo Bay basin
ⓘ
linked to:
Tokyo Bay region
|
| region | Honshu ⓘ |
| separates | Tokyo metropolitan area and Chiba Prefecture in some sections ⓘ |
| tributaryOf | Tokyo Bay ⓘ |
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: Edogawa River Description of subject: The Edogawa River is a major river in the Kantō region of Japan that flows between Chiba and Saitama prefectures before emptying into Tokyo Bay.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.