Chennai–Tiruchirappalli line
E643988
The Chennai–Tiruchirappalli line is a major electrified broad-gauge railway corridor in Tamil Nadu, India, connecting the state capital Chennai with the important inland city of Tiruchirappalli and forming part of the busy Southern Railway network.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Chennai–Tiruchirappalli line canonical | 3 |
| Chennai–Trichy–Kumbakonam–Mayiladuthurai line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7123998 — 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–Tiruchirappalli line Context triple: [Tiruchirappalli Junction railway station, hasLine, Chennai–Tiruchirappalli line]
-
A.
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.
-
B.
Chennai Suburban Railway
Chennai Suburban Railway is a major commuter rail network serving the greater Chennai metropolitan area, providing high-frequency train services that connect the city with its surrounding suburbs.
-
C.
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.
-
D.
Rameswaram–Mandapam rail line
The Rameswaram–Mandapam rail line is a coastal railway route in Tamil Nadu, India, that connects the mainland to Rameswaram Island and includes the historic Pamban Bridge over the Palk Strait.
-
E.
Chennai–Tirupati route
The Chennai–Tirupati route is a major road and rail corridor in South India connecting the metropolitan city of Chennai in Tamil Nadu with the pilgrimage city of Tirupati in Andhra Pradesh.
- 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–Tiruchirappalli line Target entity description: The Chennai–Tiruchirappalli line is a major electrified broad-gauge railway corridor in Tamil Nadu, India, connecting the state capital Chennai with the important inland city of Tiruchirappalli and forming part of the busy Southern Railway network.
-
A.
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.
-
B.
Chennai Suburban Railway
Chennai Suburban Railway is a major commuter rail network serving the greater Chennai metropolitan area, providing high-frequency train services that connect the city with its surrounding suburbs.
-
C.
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.
-
D.
Rameswaram–Mandapam rail line
The Rameswaram–Mandapam rail line is a coastal railway route in Tamil Nadu, India, that connects the mainland to Rameswaram Island and includes the historic Pamban Bridge over the Palk Strait.
-
E.
Chennai–Tirupati route
The Chennai–Tirupati route is a major road and rail corridor in South India connecting the metropolitan city of Chennai in Tamil Nadu with the pilgrimage city of Tirupati in Andhra Pradesh.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
electrified railway corridor
ⓘ
railway line ⓘ |
| administrativeRailwayZoneHeadquarters | Chennai NERFINISHED ⓘ |
| belongsToNetwork | Southern Railway network NERFINISHED ⓘ |
| category | main line ⓘ |
| connectsCapitalOfState | Chennai NERFINISHED ⓘ |
| connectsCity |
Chennai
NERFINISHED
ⓘ
Tiruchirappalli NERFINISHED ⓘ |
| connectsMajorCity | Tiruchirappalli NERFINISHED ⓘ |
| connectsTo |
Chennai Suburban Railway network at Chennai Egmore
ⓘ
Chord line towards Thanjavur and Kumbakonam at Tiruchirappalli ⓘ branch lines towards Cuddalore Port and Pondicherry at Villupuram ⓘ lines towards Karur and Dindigul at Tiruchirappalli ⓘ |
| country | India ⓘ |
| division |
Chennai railway division
NERFINISHED
ⓘ
Tiruchirappalli railway division NERFINISHED ⓘ |
| electrification | 25 kV AC overhead ⓘ |
| electrified | yes ⓘ |
| endPoint | Tiruchirappalli NERFINISHED ⓘ |
| gauge | 5 ft 6 in broad gauge ⓘ |
| hasMajorStation |
Chennai Egmore
NERFINISHED
ⓘ
Tiruchirappalli Junction NERFINISHED ⓘ Villupuram Junction NERFINISHED ⓘ |
| historicalOperator | South Indian Railway Company NERFINISHED ⓘ |
| importance | major trunk route in Tamil Nadu ⓘ |
| infrastructureType | heavy rail ⓘ |
| locatedIn |
South India
ⓘ
Tamil Nadu ⓘ |
| operator | Southern Railway zone NERFINISHED ⓘ |
| owner | Indian Railways NERFINISHED ⓘ |
| partOf |
Indian Railways network
NERFINISHED
ⓘ
Southern Railway zone NERFINISHED ⓘ |
| passesThrough |
Ariyalur
NERFINISHED
ⓘ
Chengalpattu NERFINISHED ⓘ Villupuram NERFINISHED ⓘ Vriddhachalam NERFINISHED ⓘ |
| railwayZone | Southern Railway zone NERFINISHED ⓘ |
| regionServed |
central Tamil Nadu
ⓘ
northern Tamil Nadu ⓘ |
| startPoint | Chennai NERFINISHED ⓘ |
| status | operational ⓘ |
| terminus |
Chennai Egmore
NERFINISHED
ⓘ
Tiruchirappalli Junction NERFINISHED ⓘ |
| trackConfiguration | double line on most sections ⓘ |
| usedFor |
freight traffic
ⓘ
long-distance passenger traffic ⓘ suburban and regional passenger traffic ⓘ |
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–Tiruchirappalli line Description of subject: The Chennai–Tiruchirappalli line is a major electrified broad-gauge railway corridor in Tamil Nadu, India, connecting the state capital Chennai with the important inland city of Tiruchirappalli and forming part of the busy Southern Railway network.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Chennai–Trichy–Kumbakonam–Mayiladuthurai line