North–South Corridor
E512699
The North–South Corridor is a principal metro line of the Lucknow Metro system in Uttar Pradesh, India, running along a north–south axis through the city.
All labels observed (2)
| Label | Occurrences |
|---|---|
| North–South Corridor canonical | 3 |
| North–South corridor | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5300510 — 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: North–South Corridor Context triple: [Lucknow Metro, line, North–South Corridor]
-
A.
North–South Corridor
The North–South Corridor is a major regional transport and trade route in Southern Africa that links landlocked countries to key seaports through an integrated network of roads and railways.
-
B.
North–South Corridor
The North–South Corridor is a major metro line of the Ahmedabad Metro system that runs along the city’s north–south axis, connecting key residential and commercial areas.
-
C.
East–West Corridor
The East–West Corridor is a major rapid transit line of the Ahmedabad Metro system in Ahmedabad, India, connecting key areas across the city from east to west.
-
D.
Croton Expressway
The Croton Expressway is a highway in New York State that runs through the Hudson Valley, providing regional connectivity near the New Croton Reservoir.
-
E.
Southwest Corridor
The Southwest Corridor is a major transportation and greenway corridor in Boston that combines rail lines, parks, and bike paths connecting downtown with southwestern neighborhoods.
- 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: North–South Corridor Target entity description: The North–South Corridor is a principal metro line of the Lucknow Metro system in Uttar Pradesh, India, running along a north–south axis through the city.
-
A.
North–South Corridor
The North–South Corridor is a major regional transport and trade route in Southern Africa that links landlocked countries to key seaports through an integrated network of roads and railways.
-
B.
North–South Corridor
The North–South Corridor is a major metro line of the Ahmedabad Metro system that runs along the city’s north–south axis, connecting key residential and commercial areas.
-
C.
East–West Corridor
The East–West Corridor is a major rapid transit line of the Ahmedabad Metro system in Ahmedabad, India, connecting key areas across the city from east to west.
-
D.
Croton Expressway
The Croton Expressway is a highway in New York State that runs through the Hudson Valley, providing regional connectivity near the New Croton Reservoir.
-
E.
Southwest Corridor
The Southwest Corridor is a major transportation and greenway corridor in Boston that combines rail lines, parks, and bike paths connecting downtown with southwestern neighborhoods.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf | metro line ⓘ |
| character |
elevated
ⓘ
underground ⓘ |
| cityServed | Lucknow ⓘ |
| country | India ⓘ |
| countrySubdivision | Uttar Pradesh ⓘ |
| direction | north–south ⓘ |
| electrification | 750 V DC third rail ⓘ |
| hasAxis | north–south axis through Lucknow ⓘ |
| isPrincipalLineOf | Lucknow Metro ⓘ |
| lineNumber | Line 1 ⓘ |
| locatedIn |
India
ⓘ
Lucknow ⓘ Uttar Pradesh ⓘ |
| numberOfTracks | 2 ⓘ |
| operator |
Uttar Pradesh Metro Rail Corporation
ⓘ
linked to:
Uttar Pradesh Metro Rail Corporation Limited
|
| owner |
Uttar Pradesh Metro Rail Corporation
ⓘ
linked to:
Uttar Pradesh Metro Rail Corporation Limited
|
| partOf | Lucknow Metro ⓘ |
| publicTransportType | metro ⓘ |
| regionServed |
Lucknow metropolitan area
ⓘ
linked to:
Lucknow
|
| state | Uttar Pradesh ⓘ |
| system | Lucknow Metro ⓘ |
| trackGauge | standard gauge ⓘ |
| transportType | urban rail transit ⓘ |
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: North–South Corridor Description of subject: The North–South Corridor is a principal metro line of the Lucknow Metro system in Uttar Pradesh, India, running along a north–south axis through the city.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: North–South Corridor