Triple
T7123998
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Tiruchirappalli Junction railway station |
E166013
|
entity |
| Predicate | hasLine |
P35
|
FINISHED |
| Object |
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.
|
E643988
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Chennai–Tiruchirappalli line | Statement: [Tiruchirappalli Junction railway station, hasLine, Chennai–Tiruchirappalli line]
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.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Chennai–Tiruchirappalli line Triple: [Tiruchirappalli Junction railway station, hasLine, Chennai–Tiruchirappalli line]
Generated 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.
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
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69c6888350588190870cd552b427a1cd |
completed | March 27, 2026, 1:39 p.m. |
| NER | Named-entity recognition | batch_69c6e64ab1f881908bc2468cc72d2544 |
completed | March 27, 2026, 8:19 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c7a331ff988190886bde89035623c0 |
completed | March 28, 2026, 9:45 a.m. |
| NEDg | Description generation | batch_69c7a46d95b88190bbadf3e8d1788489 |
completed | March 28, 2026, 9:50 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c7a52e6a1c8190bf45e0aa7a920baf |
completed | March 28, 2026, 9:53 a.m. |
Created at: March 27, 2026, 2:44 p.m.