Ngadda River
E389030
The Ngadda River is a waterway in northeastern Nigeria that flows through the city of Maiduguri and contributes to the region’s drainage into Lake Chad.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ngadda River canonical | 2 |
| Komadugu Gana River | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3053849 — 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: Ngadda River Context triple: [Maiduguri, locatedOnRiver, Ngadda River]
-
A.
Sumène River
The Sumène River is a watercourse in south-central France that originates in the Cantal Mountains and flows through the Auvergne region before joining larger river systems.
-
B.
Tshuapa River
The Tshuapa River is a significant waterway in the Democratic Republic of the Congo that drains the central rainforest region and contributes to the Congo River basin.
-
C.
Unzha River
The Unzha River is a significant waterway in central Russia that flows through Kostroma and neighboring regions before joining the Volga River.
-
D.
Bira River
The Bira River is a river in Russia's Far East that flows through the Jewish Autonomous Oblast before joining the larger Amur River system.
-
E.
Longai River
The Longai River is a tributary waterway in northeastern India that feeds into the Barak River system, contributing to the region’s drainage and ecology.
- 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: Ngadda River Target entity description: The Ngadda River is a waterway in northeastern Nigeria that flows through the city of Maiduguri and contributes to the region’s drainage into Lake Chad.
-
A.
Sumène River
The Sumène River is a watercourse in south-central France that originates in the Cantal Mountains and flows through the Auvergne region before joining larger river systems.
-
B.
Tshuapa River
The Tshuapa River is a significant waterway in the Democratic Republic of the Congo that drains the central rainforest region and contributes to the Congo River basin.
-
C.
Unzha River
The Unzha River is a significant waterway in central Russia that flows through Kostroma and neighboring regions before joining the Volga River.
-
D.
Bira River
The Bira River is a river in Russia's Far East that flows through the Jewish Autonomous Oblast before joining the larger Amur River system.
-
E.
Longai River
The Longai River is a tributary waterway in northeastern India that feeds into the Barak River system, contributing to the region’s drainage and ecology.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| associatedWith |
flood risk during rainy season
ⓘ
seasonal flooding in Maiduguri ⓘ |
| continent | Africa ⓘ |
| contributesTo | regional drainage into Lake Chad ⓘ |
| country | Nigeria ⓘ |
| drainageBasin | Lake Chad basin ⓘ |
| drains |
Maiduguri
ⓘ
surface form:
Maiduguri urban area
surrounding rural areas of Borno State ⓘ |
| fedBy | rainfall in northeastern Nigeria ⓘ |
| flowsThrough | Maiduguri ⓘ |
| hasClimateZone | semi-arid ⓘ |
| hasEnvironmentalIssue |
flooding
ⓘ
pollution from urban runoff ⓘ sedimentation ⓘ |
| hasLanguageRegion | Kanuri-speaking areas ⓘ |
| hasRiskFactor | overflow during intense rainfall events ⓘ |
| hasSeasonality | strongly seasonal flow ⓘ |
| hasUse |
local irrigation
ⓘ
urban drainage ⓘ water supply for local communities ⓘ |
| hydrologicalSystem | Lake Chad hydrological system ⓘ |
| isUrbanRiverIn | Maiduguri ⓘ |
| locatedIn |
Borno State
NERFINISHED
ⓘ
northeastern Nigeria ⓘ |
| mouth | Lake Chad basin ⓘ |
| partOf |
Lake Chad basin
ⓘ
surface form:
Lake Chad drainage basin
|
| passesNear |
Maiduguri
ⓘ
surface form:
Maiduguri metropolitan area
|
| region | Sahel ⓘ |
| supports | local agriculture along its banks ⓘ |
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: Ngadda River Description of subject: The Ngadda River is a waterway in northeastern Nigeria that flows through the city of Maiduguri and contributes to the region’s drainage into Lake Chad.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Komadugu Gana River