Gezira Scheme
E235413
The Gezira Scheme is one of the world’s largest irrigation projects, located between the Blue and White Nile in Sudan and primarily devoted to cotton and other agricultural production.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Gezira Scheme canonical | 5 |
| Gezira irrigation scheme | 3 |
| British-era Gezira Scheme | 1 |
| Gezira agricultural scheme | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2116091 — 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: Gezira Scheme Context triple: [Wad Madani, near, Gezira Scheme]
-
A.
Kosi Barrage
Kosi Barrage is a major flood-control and irrigation structure built across the Kosi River near the India–Nepal border.
-
B.
Grand Inga Dam Project
The Grand Inga Dam Project is an ambitious proposed hydroelectric megaproject on the Congo River in the Democratic Republic of the Congo, intended to become the world’s largest power station and a key driver of regional energy integration and development.
-
C.
Aswan High Dam
The Aswan High Dam is a massive embankment dam on the Nile River in southern Egypt, built in the 1960s to control flooding, provide hydroelectric power, and improve irrigation, while also causing the creation of Lake Nasser and the displacement of communities and archaeological sites in Nubia.
-
D.
Grand Ethiopian Renaissance Dam
The Grand Ethiopian Renaissance Dam is a massive hydroelectric dam project in Ethiopia designed to be Africa’s largest power plant and a major source of regional political and environmental controversy.
-
E.
Snowy Hydro Scheme
The Snowy Hydro Scheme is a large-scale hydroelectricity and irrigation complex in Australia’s Snowy Mountains, renowned as one of the country’s most significant engineering projects.
- 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: Gezira Scheme Target entity description: The Gezira Scheme is one of the world’s largest irrigation projects, located between the Blue and White Nile in Sudan and primarily devoted to cotton and other agricultural production.
-
A.
Kosi Barrage
Kosi Barrage is a major flood-control and irrigation structure built across the Kosi River near the India–Nepal border.
-
B.
Grand Inga Dam Project
The Grand Inga Dam Project is an ambitious proposed hydroelectric megaproject on the Congo River in the Democratic Republic of the Congo, intended to become the world’s largest power station and a key driver of regional energy integration and development.
-
C.
Aswan High Dam
The Aswan High Dam is a massive embankment dam on the Nile River in southern Egypt, built in the 1960s to control flooding, provide hydroelectric power, and improve irrigation, while also causing the creation of Lake Nasser and the displacement of communities and archaeological sites in Nubia.
-
D.
Grand Ethiopian Renaissance Dam
The Grand Ethiopian Renaissance Dam is a massive hydroelectric dam project in Ethiopia designed to be Africa’s largest power plant and a major source of regional political and environmental controversy.
-
E.
Snowy Hydro Scheme
The Snowy Hydro Scheme is a large-scale hydroelectricity and irrigation complex in Australia’s Snowy Mountains, renowned as one of the country’s most significant engineering projects.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
agricultural project
ⓘ
irrigation scheme ⓘ |
| area |
about 2.1 million feddans
ⓘ
about 880,000 hectares ⓘ |
| challenges |
aging infrastructure
ⓘ
declining cotton yields ⓘ salinization ⓘ waterlogging ⓘ |
| constructionStartDate | 1913 ⓘ |
| continent | Africa ⓘ |
| country | Sudan ⓘ |
| crop |
groundnuts
ⓘ
sorghum ⓘ vegetables ⓘ wheat ⓘ |
| developedBy |
Anglo-Egyptian Sudan
ⓘ
surface form:
Anglo-Egyptian Sudan administration
|
| developedWith | British colonial authorities ⓘ |
| economicRole |
major contributor to Sudanese GDP
ⓘ
major source of foreign exchange for Sudan ⓘ |
| environmentalImpact | altered hydrology between Blue and White Nile ⓘ |
| financedBy |
British authorities
ⓘ
surface form:
British government
private British investors ⓘ |
| firstMajorCanalCompleted | 1925 ⓘ |
| governanceModel | state-managed tenant farming system ⓘ |
| historicalSignificance |
model colonial-era irrigation scheme in Africa
ⓘ
one of the world’s largest irrigation projects ⓘ |
| irrigationType | gravity irrigation ⓘ |
| keyInfrastructure |
Sennar Dam
ⓘ
main Gezira canal ⓘ network of secondary and tertiary canals ⓘ |
| laborType | tenant farmers ⓘ |
| locatedBetween |
Blue Nile
ⓘ
White Nile ⓘ |
| locatedIn | Sudan ⓘ |
| majorCrop | cotton ⓘ |
| managedBy |
Gezira Board
ⓘ
Sudan Gezira Board ⓘ |
| nearestCity | Wad Madani ⓘ |
| opened | 1925 ⓘ |
| ownershipChange | transferred to independent Sudanese government after 1956 ⓘ |
| planningStartDate | 1910s ⓘ |
| policyChange | subject to liberalization and privatization reforms in late 20th century ⓘ |
| primaryUse | irrigated agriculture ⓘ |
| purpose |
export-oriented cotton production
ⓘ
support of British textile industry ⓘ |
| region | Al Jazirah state ⓘ |
| tenantFarmersCount | over 100,000 tenants at peak ⓘ |
| waterSource | Blue Nile ⓘ |
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: Gezira Scheme Description of subject: The Gezira Scheme is one of the world’s largest irrigation projects, located between the Blue and White Nile in Sudan and primarily devoted to cotton and other agricultural production.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Gezira agricultural scheme
this entity surface form:
Gezira irrigation scheme
this entity surface form:
Gezira irrigation scheme
this entity surface form:
Gezira irrigation scheme
this entity surface form:
British-era Gezira Scheme