Markerwaard polder
E572679
Markerwaard polder is a planned but never completed land reclamation project in the IJsselmeer in the Netherlands, intended to create new agricultural and residential land.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Markerwaard polder canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6153913 — 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: Markerwaard polder Context triple: [Houtribdijk, designedToCreate, Markerwaard polder]
-
A.
Ooijpolder
Ooijpolder is a Dutch riverine polder and nature area near Nijmegen, known for its scenic floodplains, wetlands, and rich birdlife along the Waal River.
-
B.
Nieuwkoopse Plassen
Nieuwkoopse Plassen is a scenic lake and wetland area in the Netherlands, renowned for its rich birdlife, peat landscapes, and opportunities for boating and nature recreation.
-
C.
Noordoostpolder
Noordoostpolder is a large Dutch polder and municipality in the province of Flevoland, created by land reclamation from the former Zuiderzee and known for its planned agricultural landscape and towns.
-
D.
Diemerzeedijk area
The Diemerzeedijk area is a waterside district near Amsterdam known for its dike landscape, recreational paths, and proximity to canals and nature reserves.
-
E.
Westeinderplassen
Westeinderplassen is a large lake and recreational water area in the Dutch province of North Holland, known for boating, water sports, and horticulture.
- 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: Markerwaard polder Target entity description: Markerwaard polder is a planned but never completed land reclamation project in the IJsselmeer in the Netherlands, intended to create new agricultural and residential land.
-
A.
Ooijpolder
Ooijpolder is a Dutch riverine polder and nature area near Nijmegen, known for its scenic floodplains, wetlands, and rich birdlife along the Waal River.
-
B.
Nieuwkoopse Plassen
Nieuwkoopse Plassen is a scenic lake and wetland area in the Netherlands, renowned for its rich birdlife, peat landscapes, and opportunities for boating and nature recreation.
-
C.
Noordoostpolder
Noordoostpolder is a large Dutch polder and municipality in the province of Flevoland, created by land reclamation from the former Zuiderzee and known for its planned agricultural landscape and towns.
-
D.
Diemerzeedijk area
The Diemerzeedijk area is a waterside district near Amsterdam known for its dike landscape, recreational paths, and proximity to canals and nature reserves.
-
E.
Westeinderplassen
Westeinderplassen is a large lake and recreational water area in the Dutch province of North Holland, known for boating, water sports, and horticulture.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
land reclamation project
ⓘ
planned polder ⓘ |
| cancellationDate | early 1990s ⓘ |
| consideredBy |
Dutch national government
ⓘ
Rijkswaterstaat NERFINISHED ⓘ |
| country | Netherlands ⓘ |
| hasAlternativeName | Markerwaard NERFINISHED ⓘ |
| hasEffectOn | current protected status of Markermeer as open water ⓘ |
| hasNameOrigin | derived from Markermeer ⓘ |
| hasPlannedUse |
agricultural land
ⓘ
nature reserve ⓘ recreational area ⓘ residential area ⓘ |
| heritageStatus | important example of unrealized Dutch water management project ⓘ |
| inception | 1930s ⓘ |
| influencedCreationOf | Marker Wadden NERFINISHED ⓘ |
| isExampleOf | unrealized megaproject in the Netherlands ⓘ |
| isPlannedArea | southwestern part of IJsselmeer ⓘ |
| isRelatedTo |
Afsluitdijk
NERFINISHED
ⓘ
Noordoostpolder NERFINISHED ⓘ Oostelijk Flevoland NERFINISHED ⓘ Zuidelijk Flevoland NERFINISHED ⓘ |
| languageOfName | Dutch ⓘ |
| locatedInAdministrativeTerritorialEntity |
Flevoland
NERFINISHED
ⓘ
North Holland NERFINISHED ⓘ |
| locatedInBodyOfWater | IJsselmeer NERFINISHED ⓘ |
| opposedBy |
environmental organizations
ⓘ
water management experts concerned about ecology ⓘ |
| partOf | Zuiderzee Works NERFINISHED ⓘ |
| partOfDebateOn | future of IJsselmeer and Markermeer ⓘ |
| plannedFunction |
expand Dutch agricultural production
ⓘ
relieve population pressure in Randstad ⓘ |
| plannedNearbyCity | Lelystad NERFINISHED ⓘ |
| planningContinuedIn |
1950s
ⓘ
1960s ⓘ 1970s ⓘ 1980s ⓘ |
| projectStatus | cancelled ⓘ |
| reasonForCancellation |
changing economic priorities
ⓘ
environmental concerns ⓘ protection of open water landscape ⓘ reduced need for new agricultural land ⓘ |
| status | never completed ⓘ |
| topicOf |
Dutch spatial planning debates
ⓘ
environmental policy debates in the Netherlands ⓘ |
| wouldHaveBeenConnectedTo | existing polders in Flevoland ⓘ |
| wouldHaveBeenCreatedBy | damming part of IJsselmeer ⓘ |
| wouldHaveBeenSeparatedFrom | Markermeer NERFINISHED ⓘ |
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: Markerwaard polder Description of subject: Markerwaard polder is a planned but never completed land reclamation project in the IJsselmeer in the Netherlands, intended to create new agricultural and residential land.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.