IJssel
E27000
The IJssel is a major distributary branch of the Rhine River in the Netherlands, flowing northward to the IJsselmeer and playing an important role in the country’s water management and inland navigation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IJssel canonical | 14 |
| IJssel river system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T118661 — 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: IJssel Context triple: [Rhine–Meuse–Scheldt delta, containsPart, IJssel]
-
A.
Waal
The Waal is a major distributary branch of the Rhine River in the Netherlands, serving as an important waterway for shipping and part of the country’s main river system.
-
B.
Amstel River
The Amstel River is a historic waterway in the Netherlands that flows through and gives its name to the city of Amsterdam.
-
C.
Oude Maas
The Oude Maas is a major distributary river in the western Netherlands that forms part of the complex Rhine–Meuse–Scheldt delta system.
-
D.
Nieuwe Waterweg
Nieuwe Waterweg is a major artificial ship canal in the Netherlands that provides a direct deep-water connection between the North Sea and the port of Rotterdam.
-
E.
Scheldt
The Scheldt is a major river in Western Europe that flows through France, Belgium, and the Netherlands, playing a key role in regional trade and navigation.
- 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: IJssel Target entity description: The IJssel is a major distributary branch of the Rhine River in the Netherlands, flowing northward to the IJsselmeer and playing an important role in the country’s water management and inland navigation.
-
A.
Waal
The Waal is a major distributary branch of the Rhine River in the Netherlands, serving as an important waterway for shipping and part of the country’s main river system.
-
B.
Amstel River
The Amstel River is a historic waterway in the Netherlands that flows through and gives its name to the city of Amsterdam.
-
C.
Oude Maas
The Oude Maas is a major distributary river in the western Netherlands that forms part of the complex Rhine–Meuse–Scheldt delta system.
-
D.
Nieuwe Waterweg
Nieuwe Waterweg is a major artificial ship canal in the Netherlands that provides a direct deep-water connection between the North Sea and the port of Rotterdam.
-
E.
Scheldt
The Scheldt is a major river in Western Europe that flows through France, Belgium, and the Netherlands, playing a key role in regional trade and navigation.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
distributary
ⓘ
river ⓘ |
| basinCountry | Netherlands ⓘ |
| connectedTo |
Dutch canal network
ⓘ
IJsselmeer ⓘ
surface form:
Lake IJssel (IJsselmeer)
Nederrijn ⓘ Pannerdens Kanaal ⓘ |
| country | Netherlands ⓘ |
| directionOfFlow | northward ⓘ |
| distinguishedFrom |
Gelderse IJssel
ⓘ
surface form:
Oude IJssel
|
| flowsInto | IJsselmeer ⓘ |
| flowsThrough | eastern Netherlands ⓘ |
| formsPartOf | Dutch river delta ⓘ |
| hasAlternativeSpelling | Gelderse IJssel ⓘ |
| hasEstuaryNear | Kampen ⓘ |
| hasType | lowland river ⓘ |
| historicalRegion | IJsselvallei ⓘ |
| importantFor |
Dutch flood protection system
ⓘ
regional economy of Overijssel and Gelderland ⓘ |
| length | approximately 125 km ⓘ |
| locatedIn |
Netherlands
ⓘ
Gelderland ⓘ
surface form:
province of Gelderland
province of Gelderland and Overijssel border region ⓘ province of Overijssel ⓘ |
| majorFunction |
inland navigation
ⓘ
water management ⓘ |
| mouth | IJsselmeer ⓘ |
| nameLanguage | Dutch ⓘ |
| nearbyCity |
Arnhem
ⓘ
Deventer ⓘ Kampen ⓘ Zutphen ⓘ |
| partOf |
Rhine–Meuse river system
ⓘ
surface form:
Rhine river system
|
| passesThrough |
Deventer
ⓘ
Doesburg ⓘ Kampen ⓘ Zutphen ⓘ |
| region |
Gelderland
ⓘ
surface form:
Gelderland region
Overijssel ⓘ
surface form:
Overijssel region
|
| riverSystemRole | major northern distributary of the Rhine in the Netherlands ⓘ |
| sourceRiver | Rhine ⓘ |
| startsNear | Arnhem ⓘ |
| tributaryOf |
Rhine–Meuse river system
ⓘ
surface form:
Rhine distributary system
|
| usedFor |
flood control
ⓘ
irrigation ⓘ shipping ⓘ |
| waterwayClass | important inland waterway of the Netherlands ⓘ |
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: IJssel Description of subject: The IJssel is a major distributary branch of the Rhine River in the Netherlands, flowing northward to the IJsselmeer and playing an important role in the country’s water management and inland navigation.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Eastern Netherlands
this entity surface form:
IJssel river system