Howrah–Chennai main line
E718351
The Howrah–Chennai main line is a major Indian Railways trunk route connecting Kolkata (Howrah) with Chennai along the eastern coast, serving as a key corridor for both passenger and freight traffic.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Howrah–Chennai main line canonical | 4 |
| Chennai–Howrah line | 1 |
| Chennai–Howrah main line | 1 |
| Howrah–Chennai corridor | 1 |
| Howrah–Chennai main line (via Kharagpur) | 1 |
| Howrah–Chennai main line (via branch connection) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8193737 — 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: Howrah–Chennai main line Context triple: [Vijayawada Junction railway station, locatedOn, Howrah–Chennai main line]
-
A.
Howrah–Nagpur–Mumbai line
The Howrah–Nagpur–Mumbai line is a major Indian Railways trunk route connecting Kolkata (Howrah) in the east with Mumbai in the west via Nagpur, serving as a key corridor for both passenger and freight traffic across central India.
-
B.
Howrah–Delhi main line
The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
-
C.
Howrah–Bardhaman main line
The Howrah–Bardhaman main line is a major suburban and long-distance railway corridor in West Bengal, India, connecting Howrah (Kolkata) with Bardhaman and serving numerous important towns along the route.
-
D.
Howrah–Bardhaman chord line
The Howrah–Bardhaman chord line is a major suburban and intercity railway corridor in West Bengal, India, connecting Howrah with Bardhaman via a shorter, high-capacity route.
-
E.
Howrah–Kharagpur railway line
The Howrah–Kharagpur railway line is a major suburban and long-distance rail corridor in West Bengal, India, connecting the metropolitan hub of Howrah (Kolkata) with the industrial town of Kharagpur and serving numerous intermediate towns and junctions.
- 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: Howrah–Chennai main line Target entity description: The Howrah–Chennai main line is a major Indian Railways trunk route connecting Kolkata (Howrah) with Chennai along the eastern coast, serving as a key corridor for both passenger and freight traffic.
-
A.
Howrah–Nagpur–Mumbai line
The Howrah–Nagpur–Mumbai line is a major Indian Railways trunk route connecting Kolkata (Howrah) in the east with Mumbai in the west via Nagpur, serving as a key corridor for both passenger and freight traffic across central India.
-
B.
Howrah–Delhi main line
The Howrah–Delhi main line is one of India's busiest and most important railway corridors, connecting Kolkata (Howrah) with the national capital New Delhi and passing through major cities across northern and eastern India.
-
C.
Howrah–Bardhaman main line
The Howrah–Bardhaman main line is a major suburban and long-distance railway corridor in West Bengal, India, connecting Howrah (Kolkata) with Bardhaman and serving numerous important towns along the route.
-
D.
Howrah–Bardhaman chord line
The Howrah–Bardhaman chord line is a major suburban and intercity railway corridor in West Bengal, India, connecting Howrah with Bardhaman via a shorter, high-capacity route.
-
E.
Howrah–Kharagpur railway line
The Howrah–Kharagpur railway line is a major suburban and long-distance rail corridor in West Bengal, India, connecting the metropolitan hub of Howrah (Kolkata) with the industrial town of Kharagpur and serving numerous intermediate towns and junctions.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf | railway line ⓘ |
| belongsToZone |
East Coast Railway zone
NERFINISHED
ⓘ
Eastern Railway zone NERFINISHED ⓘ South Central Railway zone NERFINISHED ⓘ South Eastern Railway zone NERFINISHED ⓘ Southern Railway zone NERFINISHED ⓘ |
| connectsCity |
Chennai
NERFINISHED
ⓘ
Kolkata NERFINISHED ⓘ |
| connectsPort |
Chennai Port
NERFINISHED
ⓘ
Kolkata Port NERFINISHED ⓘ Paradip Port NERFINISHED ⓘ Visakhapatnam Port NERFINISHED ⓘ |
| connectsRegion |
eastern India
ⓘ
southern India ⓘ |
| country | India ⓘ |
| electrification | fully electrified ⓘ |
| endCity | Chennai NERFINISHED ⓘ |
| endPoint | Chennai Central railway station NERFINISHED ⓘ |
| gauge |
1676 mm broad gauge
ⓘ
5 ft 6 in broad gauge ⓘ |
| historicalOperator |
East Coast State Railway
NERFINISHED
ⓘ
Madras Railway NERFINISHED ⓘ |
| locatedOn | eastern coast of India ⓘ |
| majorJunction |
Bhadrak
NERFINISHED
ⓘ
Bhubaneswar NERFINISHED ⓘ Cuttack NERFINISHED ⓘ Gudur Junction NERFINISHED ⓘ Kharagpur Junction NERFINISHED ⓘ Khurda Road Junction NERFINISHED ⓘ Vijayawada Junction NERFINISHED ⓘ Visakhapatnam NERFINISHED ⓘ |
| operator | Indian Railways NERFINISHED ⓘ |
| partOf |
East Coast railway corridor
NERFINISHED
ⓘ
Golden Quadrilateral railway network of India NERFINISHED ⓘ |
| passesThroughState |
Andhra Pradesh
NERFINISHED
ⓘ
Odisha NERFINISHED ⓘ Tamil Nadu NERFINISHED ⓘ West Bengal NERFINISHED ⓘ |
| primaryUse |
freight traffic
ⓘ
passenger traffic ⓘ |
| startCity | Howrah NERFINISHED ⓘ |
| startMetropolitanArea | Kolkata NERFINISHED ⓘ |
| startPoint | Howrah Junction railway station NERFINISHED ⓘ |
| status | operational ⓘ |
| strategicImportance |
key freight corridor for coal
ⓘ
key freight corridor for iron ore ⓘ key freight corridor for petroleum products ⓘ key freight corridor for steel ⓘ |
| trackConfiguration | double line or more on most sections ⓘ |
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: Howrah–Chennai main line Description of subject: The Howrah–Chennai main line is a major Indian Railways trunk route connecting Kolkata (Howrah) with Chennai along the eastern coast, serving as a key corridor for both passenger and freight traffic.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Howrah–Chennai corridor
this entity surface form:
Howrah–Chennai main line (via Kharagpur)
this entity surface form:
Chennai–Howrah main line
this entity surface form:
Howrah–Chennai main line (via branch connection)
Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station
→
railwayLine
→
Howrah–Chennai main line
ⓘ
this entity surface form:
Chennai–Howrah line