Chennai–Kolkata railway corridor
E732547
The Chennai–Kolkata railway corridor is a major Indian rail route connecting the southeastern metropolis of Chennai with the eastern city of Kolkata, serving as a key artery for passenger and freight transport along the east coast.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chennai–Kolkata railway corridor canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8404447 — 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: Chennai–Kolkata railway corridor Context triple: [Nellore, locatedNear, Chennai–Kolkata railway corridor]
-
A.
Delhi–Kolkata rail corridor
The Delhi–Kolkata rail corridor is one of India’s busiest and most important railway routes, linking the national capital with the eastern metropolis through major northern and eastern cities.
-
B.
Delhi–Mumbai line
The Delhi–Mumbai line is one of India’s busiest and most important railway corridors, connecting the national capital New Delhi with the financial hub Mumbai and passing through major cities in northern and western India.
-
C.
Delhi–Chennai line
The Delhi–Chennai line is a major Indian Railways trunk route connecting the national capital New Delhi with the southern metropolis Chennai, passing through key central Indian cities such as Nagpur.
-
D.
Konkan Railway corridor
The Konkan Railway corridor is a major railway line running along India’s Konkan coast, known for its engineering feats through rugged terrain and its role in connecting Maharashtra, Goa, and Karnataka.
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E.
Nagpur–Secunderabad line
The Nagpur–Secunderabad line is a major railway route in central and southern India that connects Nagpur in Maharashtra with Secunderabad in Telangana, serving as an important corridor for both passenger and freight traffic.
- 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: Chennai–Kolkata railway corridor Target entity description: The Chennai–Kolkata railway corridor is a major Indian rail route connecting the southeastern metropolis of Chennai with the eastern city of Kolkata, serving as a key artery for passenger and freight transport along the east coast.
-
A.
Delhi–Kolkata rail corridor
The Delhi–Kolkata rail corridor is one of India’s busiest and most important railway routes, linking the national capital with the eastern metropolis through major northern and eastern cities.
-
B.
Delhi–Mumbai line
The Delhi–Mumbai line is one of India’s busiest and most important railway corridors, connecting the national capital New Delhi with the financial hub Mumbai and passing through major cities in northern and western India.
-
C.
Delhi–Chennai line
The Delhi–Chennai line is a major Indian Railways trunk route connecting the national capital New Delhi with the southern metropolis Chennai, passing through key central Indian cities such as Nagpur.
-
D.
Konkan Railway corridor
The Konkan Railway corridor is a major railway line running along India’s Konkan coast, known for its engineering feats through rugged terrain and its role in connecting Maharashtra, Goa, and Karnataka.
-
E.
Nagpur–Secunderabad line
The Nagpur–Secunderabad line is a major railway route in central and southern India that connects Nagpur in Maharashtra with Secunderabad in Telangana, serving as an important corridor for both passenger and freight traffic.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
railway corridor
ⓘ
railway line ⓘ |
| coastal | yes ⓘ |
| connectsCity |
Chennai
NERFINISHED
ⓘ
Kolkata NERFINISHED ⓘ |
| country | India ⓘ |
| direction |
north–south
ⓘ
southeast–northeast ⓘ |
| electrification | fully electrified ⓘ |
| endPoint | Kolkata NERFINISHED ⓘ |
| endStation |
Chennai Central
NERFINISHED
ⓘ
Howrah Junction NERFINISHED ⓘ |
| gauge | 5 ft 6 in broad gauge ⓘ |
| importanceFor |
east coast connectivity
ⓘ
movement of coal ⓘ movement of industrial goods ⓘ |
| locatedIn | east coast of India ⓘ |
| majorJunctionOnRoute |
Bhubaneswar
NERFINISHED
ⓘ
Cuttack NERFINISHED ⓘ Kharagpur NERFINISHED ⓘ Vijayawada NERFINISHED ⓘ Visakhapatnam NERFINISHED ⓘ |
| managedBy |
East Coast Railway zone
NERFINISHED
ⓘ
South Central Railway zone NERFINISHED ⓘ South Eastern Railway zone NERFINISHED ⓘ Southern Railway zone NERFINISHED ⓘ |
| operator | Indian Railways NERFINISHED ⓘ |
| partOf | Howrah–Chennai main line NERFINISHED ⓘ |
| partOfNetwork | Golden Quadrilateral railway network of India NERFINISHED ⓘ |
| passesThroughRegion |
Andhra Pradesh
NERFINISHED
ⓘ
Odisha NERFINISHED ⓘ Tamil Nadu NERFINISHED ⓘ West Bengal NERFINISHED ⓘ |
| primaryUse |
freight transport
ⓘ
passenger transport ⓘ |
| servedByTrainType |
freight trains
ⓘ
long-distance express trains ⓘ superfast express trains ⓘ |
| servesCity |
Chennai metropolitan area
NERFINISHED
ⓘ
Kolkata metropolitan area NERFINISHED ⓘ |
| significance |
key east coast rail artery
ⓘ
major trunk route of Indian Railways ⓘ |
| startPoint | Chennai NERFINISHED ⓘ |
| status | operational ⓘ |
| terminus |
Chennai
NERFINISHED
ⓘ
Kolkata NERFINISHED ⓘ |
| trackType | mixed traffic route ⓘ |
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: Chennai–Kolkata railway corridor Description of subject: The Chennai–Kolkata railway corridor is a major Indian rail route connecting the southeastern metropolis of Chennai with the eastern city of Kolkata, serving as a key artery for passenger and freight transport along the east coast.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.