Chennai–Thiruvananthapuram line
E1020694
The Chennai–Thiruvananthapuram line is a major Indian Railways route in South India that connects Tamil Nadu’s capital Chennai with Kerala’s capital Thiruvananthapuram, serving numerous important cities and towns along the way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chennai–Thiruvananthapuram line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T13036615 — 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–Thiruvananthapuram line Context triple: [Southern Railway zone, notableRoute, Chennai–Thiruvananthapuram line]
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A.
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.
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B.
Chennai–Bangalore line
The Chennai–Bangalore line is a major Indian Railways trunk route connecting the cities of Chennai in Tamil Nadu and Bengaluru in Karnataka, serving numerous intermediate towns and suburban areas.
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C.
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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D.
Coimbatore–Shoranur line
The Coimbatore–Shoranur line is a key broad-gauge railway route in southern India that connects Coimbatore in Tamil Nadu with Shoranur in Kerala, facilitating major passenger and freight movement between the two states.
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E.
Jolarpettai–Shoranur line
The Jolarpettai–Shoranur line is a major broad-gauge railway route in southern India that connects Tamil Nadu with Kerala, 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–Thiruvananthapuram line Target entity description: The Chennai–Thiruvananthapuram line is a major Indian Railways route in South India that connects Tamil Nadu’s capital Chennai with Kerala’s capital Thiruvananthapuram, serving numerous important cities and towns along the way.
-
A.
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.
-
B.
Chennai–Bangalore line
The Chennai–Bangalore line is a major Indian Railways trunk route connecting the cities of Chennai in Tamil Nadu and Bengaluru in Karnataka, serving numerous intermediate towns and suburban areas.
-
C.
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.
-
D.
Coimbatore–Shoranur line
The Coimbatore–Shoranur line is a key broad-gauge railway route in southern India that connects Coimbatore in Tamil Nadu with Shoranur in Kerala, facilitating major passenger and freight movement between the two states.
-
E.
Jolarpettai–Shoranur line
The Jolarpettai–Shoranur line is a major broad-gauge railway route in southern India that connects Tamil Nadu with Kerala, serving as an important corridor for both passenger and freight traffic.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
Indian Railways route
ⓘ
railway line ⓘ |
| connects |
Chennai
NERFINISHED
ⓘ
Thiruvananthapuram NERFINISHED ⓘ |
| connectsCapitalCity |
Chennai
NERFINISHED
ⓘ
Thiruvananthapuram NERFINISHED ⓘ |
| country | India ⓘ |
| electrification | 25 kV AC overhead line ⓘ |
| endPoint | Thiruvananthapuram NERFINISHED ⓘ |
| gauge | 5 ft 6 in broad gauge ⓘ |
| importance | major trunk route in South India ⓘ |
| locatedIn | South India ⓘ |
| majorFunction |
freight transport
ⓘ
intercity passenger transport ⓘ long-distance express services ⓘ |
| operator | Southern Railway zone NERFINISHED ⓘ |
| owner | Indian Railways NERFINISHED ⓘ |
| partOf | Southern Railway zone network NERFINISHED ⓘ |
| passesThrough |
Kerala
NERFINISHED
ⓘ
Tamil Nadu NERFINISHED ⓘ |
| railwayZone | Southern Railway zone NERFINISHED ⓘ |
| regionServed |
Kerala
NERFINISHED
ⓘ
Tamil Nadu NERFINISHED ⓘ |
| servesCity |
Chennai
NERFINISHED
ⓘ
Dindigul NERFINISHED ⓘ Kollam NERFINISHED ⓘ Madurai NERFINISHED ⓘ Nagercoil NERFINISHED ⓘ Thiruvananthapuram NERFINISHED ⓘ Tiruchirappalli NERFINISHED ⓘ Tirunelveli NERFINISHED ⓘ Villupuram NERFINISHED ⓘ |
| startPoint | Chennai NERFINISHED ⓘ |
| terminusStation |
Chennai Egmore
NERFINISHED
ⓘ
Thiruvananthapuram Central NERFINISHED ⓘ |
| trackGauge | broad gauge ⓘ |
| usedBy |
express trains
ⓘ
freight trains ⓘ passenger trains ⓘ superfast trains ⓘ |
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–Thiruvananthapuram line Description of subject: The Chennai–Thiruvananthapuram line is a major Indian Railways route in South India that connects Tamil Nadu’s capital Chennai with Kerala’s capital Thiruvananthapuram, serving numerous important cities and towns along the way.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station
→
railwayLine
→
Chennai–Thiruvananthapuram line
ⓘ