Iruma River
E945099
The Iruma River is a river in Japan that flows through Saitama Prefecture and joins the larger Arakawa River system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Iruma River canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T10567491 — 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: Iruma River Context triple: [Arakawa River, tributary, Iruma 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.
Shakujii River
Shakujii River is a tributary of the Arakawa River flowing through western and northern Tokyo, known for its urban green corridors and riverside parks.
-
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.
Kumagawa River
Kumagawa River is a major river in Japan’s Kyushu region known for its fast currents, scenic gorges, and frequent flooding.
-
E.
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.
- 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: Iruma River Target entity description: The Iruma River is a river in Japan that flows through Saitama Prefecture and joins the larger Arakawa River system.
-
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.
Shakujii River
Shakujii River is a tributary of the Arakawa River flowing through western and northern Tokyo, known for its urban green corridors and riverside parks.
-
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.
Kumagawa River
Kumagawa River is a major river in Japan’s Kyushu region known for its fast currents, scenic gorges, and frequent flooding.
-
E.
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.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Japan ⓘ |
| country | Japan ⓘ |
| flowsThrough | Saitama Prefecture ⓘ |
| hasHydrologicalConnectionWith | Arakawa River ⓘ |
| hasLanguageRegion | Japanese language area ⓘ |
| hasNameInLanguage | 入間川 (Japanese) ⓘ |
| hasWatershedIn | Saitama Prefecture NERFINISHED ⓘ |
| isInAdministrativeTerritory | Saitama Prefecture NERFINISHED ⓘ |
| locatedIn |
Honshu
ⓘ
Kantō region ⓘ Saitama Prefecture ⓘ |
| locatedOnContinent | Asia ⓘ |
| mouthOf | Arakawa River ⓘ |
| partOf |
Arakawa River system
ⓘ
linked to:
Arakawa River
|
| region | Kantō region ⓘ |
| riverSystem |
Arakawa River system
ⓘ
linked to:
Arakawa River
|
| sourceCountry | Japan ⓘ |
| tributaryOf | Arakawa River ⓘ |
| typeOfWaterBody | freshwater river ⓘ |
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: Iruma River Description of subject: The Iruma River is a river in Japan that flows through Saitama Prefecture and joins the larger Arakawa River system.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.