Chennai–Madurai line
E1021710
The Chennai–Madurai line is a major railway route in the Indian state of Tamil Nadu that connects the capital city Chennai with the important cultural and commercial center of Madurai.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chennai–Madurai line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13036616 — 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–Madurai line Context triple: [Southern Railway zone, notableRoute, Chennai–Madurai line]
-
A.
Chennai–Coimbatore line
The Chennai–Coimbatore line is a major railway route in the Indian state of Tamil Nadu that connects the state capital Chennai with the industrial city of Coimbatore, serving as a key corridor for both passenger and freight traffic.
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B.
Tiruchirappalli–Madurai line
The Tiruchirappalli–Madurai line is a key railway route in the Indian state of Tamil Nadu that connects the major cities of Tiruchirappalli and Madurai, serving as an important corridor for both passenger and freight traffic.
-
C.
Chennai–Tiruchirappalli line
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.
-
D.
Tiruchirappalli–Dindigul line
The Tiruchirappalli–Dindigul line is a key broad-gauge railway route in Tamil Nadu, India, connecting the major cities of Tiruchirappalli and Dindigul and serving as an important link in the Southern Railway network.
-
E.
Coimbatore–Mettupalayam line
The Coimbatore–Mettupalayam line is a short broad-gauge railway route in Tamil Nadu, India, connecting the city of Coimbatore with the foothill town of Mettupalayam and serving as a key link to the Nilgiri Mountain Railway.
- 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–Madurai line Target entity description: The Chennai–Madurai line is a major railway route in the Indian state of Tamil Nadu that connects the capital city Chennai with the important cultural and commercial center of Madurai.
-
A.
Chennai–Coimbatore line
The Chennai–Coimbatore line is a major railway route in the Indian state of Tamil Nadu that connects the state capital Chennai with the industrial city of Coimbatore, serving as a key corridor for both passenger and freight traffic.
-
B.
Tiruchirappalli–Madurai line
The Tiruchirappalli–Madurai line is a key railway route in the Indian state of Tamil Nadu that connects the major cities of Tiruchirappalli and Madurai, serving as an important corridor for both passenger and freight traffic.
-
C.
Chennai–Tiruchirappalli line
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.
-
D.
Tiruchirappalli–Dindigul line
The Tiruchirappalli–Dindigul line is a key broad-gauge railway route in Tamil Nadu, India, connecting the major cities of Tiruchirappalli and Dindigul and serving as an important link in the Southern Railway network.
-
E.
Coimbatore–Mettupalayam line
The Coimbatore–Mettupalayam line is a short broad-gauge railway route in Tamil Nadu, India, connecting the city of Coimbatore with the foothill town of Mettupalayam and serving as a key link to the Nilgiri Mountain Railway.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
railway line
ⓘ
railway route ⓘ |
| category |
Rail transport in Chennai
ⓘ
Rail transport in Madurai ⓘ Railway lines in Tamil Nadu ⓘ |
| connectsCity |
Chennai
NERFINISHED
ⓘ
Madurai NERFINISHED ⓘ |
| connectsRegion |
northern Tamil Nadu
ⓘ
southern Tamil Nadu ⓘ |
| country | India ⓘ |
| electrification | electrified ⓘ |
| endStation | Madurai Junction NERFINISHED ⓘ |
| function | connects state capital with major cultural and commercial center ⓘ |
| gauge | broad gauge ⓘ |
| hasStation |
Chennai Egmore
NERFINISHED
ⓘ
Dindigul Junction NERFINISHED ⓘ Madurai Junction NERFINISHED ⓘ Tiruchirappalli Junction NERFINISHED ⓘ Villupuram Junction NERFINISHED ⓘ |
| importance | major railway route in Tamil Nadu ⓘ |
| locatedIn |
Chennai division of Southern Railway zone
NERFINISHED
ⓘ
Madurai division of Southern Railway zone NERFINISHED ⓘ Tamil Nadu ⓘ |
| operator | Southern Railway zone NERFINISHED ⓘ |
| owner | Indian Railways NERFINISHED ⓘ |
| partOf | Indian Railways broad-gauge network NERFINISHED ⓘ |
| passesThroughCity |
Dindigul
NERFINISHED
ⓘ
Tiruchirappalli NERFINISHED ⓘ Villupuram NERFINISHED ⓘ |
| railwayZone | Southern Railway zone NERFINISHED ⓘ |
| regionServed | South India NERFINISHED ⓘ |
| servesCity |
Chennai
NERFINISHED
ⓘ
Dindigul NERFINISHED ⓘ Madurai NERFINISHED ⓘ Tiruchirappalli NERFINISHED ⓘ Villupuram NERFINISHED ⓘ |
| startStation | Chennai Egmore NERFINISHED ⓘ |
| state | Tamil Nadu ⓘ |
| terminus |
Chennai
NERFINISHED
ⓘ
Madurai NERFINISHED ⓘ |
| usedFor |
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: Chennai–Madurai line Description of subject: The Chennai–Madurai line is a major railway route in the Indian state of Tamil Nadu that connects the capital city Chennai with the important cultural and commercial center of Madurai.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.