Nigerian Railway Corporation main line
E703300
The Nigerian Railway Corporation main line is a principal railway route in Nigeria that connects major cities and regions across the country, serving as a key backbone of its rail transport network.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Agege railway corridor | 1 |
| Nigerian Railway Corporation main line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7962853 — 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: Nigerian Railway Corporation main line Context triple: [Zaria, Kaduna State, Nigeria, railConnection, Nigerian Railway Corporation main line]
-
A.
Transcameroon Railway
The Transcameroon Railway is a major rail line in Cameroon that links the country's central and northern regions, supporting both passenger travel and freight transport across key economic areas.
-
B.
Port Harcourt–Aba Road
Port Harcourt–Aba Road is a major highway in southern Nigeria that links the city of Port Harcourt with the commercial hub of Aba, serving as a key route for regional trade and daily commuting.
-
C.
Abuja–Keffi–Lafia highway
The Abuja–Keffi–Lafia highway is a major intercity roadway in central Nigeria that links the federal capital Abuja with key urban centers in Nasarawa State and beyond.
-
D.
Abuja–Kaduna expressway
The Abuja–Kaduna expressway is a major Nigerian highway linking the capital city Abuja with Kaduna, serving as a key transport corridor in the country’s north-central region.
-
E.
Port Harcourt–Owerri Road
Port Harcourt–Owerri Road is a major highway in southern Nigeria that links the city of Port Harcourt with Owerri, facilitating regional transport and commerce.
- 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: Nigerian Railway Corporation main line Target entity description: The Nigerian Railway Corporation main line is a principal railway route in Nigeria that connects major cities and regions across the country, serving as a key backbone of its rail transport network.
-
A.
Transcameroon Railway
The Transcameroon Railway is a major rail line in Cameroon that links the country's central and northern regions, supporting both passenger travel and freight transport across key economic areas.
-
B.
Port Harcourt–Aba Road
Port Harcourt–Aba Road is a major highway in southern Nigeria that links the city of Port Harcourt with the commercial hub of Aba, serving as a key route for regional trade and daily commuting.
-
C.
Abuja–Keffi–Lafia highway
The Abuja–Keffi–Lafia highway is a major intercity roadway in central Nigeria that links the federal capital Abuja with key urban centers in Nasarawa State and beyond.
-
D.
Abuja–Kaduna expressway
The Abuja–Kaduna expressway is a major Nigerian highway linking the capital city Abuja with Kaduna, serving as a key transport corridor in the country’s north-central region.
-
E.
Port Harcourt–Owerri Road
Port Harcourt–Owerri Road is a major highway in southern Nigeria that links the city of Port Harcourt with Owerri, facilitating regional transport and commerce.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf | railway line ⓘ |
| connects |
major cities in Nigeria
ⓘ
major regions in Nigeria ⓘ |
| country | Nigeria ⓘ |
| economicImpact | supports national trade and mobility in Nigeria ⓘ |
| electrification | non-electrified ⓘ |
| freightRole |
movement of agricultural products
ⓘ
movement of bulk commodities ⓘ movement of industrial goods ⓘ |
| gauge | narrow gauge ⓘ |
| locatedIn | West Africa NERFINISHED ⓘ |
| modeOfTransport | rail transport ⓘ |
| networkType | intercity rail ⓘ |
| operator | Nigerian Railway Corporation NERFINISHED ⓘ |
| owner | Federal Government of Nigeria NERFINISHED ⓘ |
| partOf | Nigerian railway network NERFINISHED ⓘ |
| passengerRole | intercity passenger services ⓘ |
| primaryFunction | long-distance rail corridor ⓘ |
| regulatingAuthority | Federal Ministry of Transportation (Nigeria) NERFINISHED ⓘ |
| role | backbone of Nigerian rail transport network ⓘ |
| significance | principal railway route in Nigeria ⓘ |
| status | operational (with sections under rehabilitation) ⓘ |
| trackConfiguration | single track (predominantly) ⓘ |
| use |
freight transport
ⓘ
passenger transport ⓘ |
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: Nigerian Railway Corporation main line Description of subject: The Nigerian Railway Corporation main line is a principal railway route in Nigeria that connects major cities and regions across the country, serving as a key backbone of its rail transport network.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Agege railway corridor