Triple
T14820540
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chennai Central Metro |
E348438
|
entity |
| Predicate | connectsWith |
P37
|
FINISHED |
| Object | Puratchi Thalaivar Dr. M. G. Ramachandran Central Railway Station |
E337979
|
NE FINISHED |
How this triple was built (2 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: Puratchi Thalaivar Dr. M. G. Ramachandran Central Railway Station | Statement: [Chennai Central Metro, connectsWith, Puratchi Thalaivar Dr. M. G. Ramachandran Central Railway Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Puratchi Thalaivar Dr. M. G. Ramachandran Central Railway Station Context triple: [Chennai Central Metro, connectsWith, Puratchi Thalaivar Dr. M. G. Ramachandran Central Railway Station]
-
A.
Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station
chosen
Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station is the main railway terminus of Chennai and one of the busiest and most important rail hubs in South India.
-
B.
Madurai Junction railway station
Madurai Junction railway station is a major railway hub in Tamil Nadu, India, serving as a key transit point for trains connecting southern cities with the rest of the country.
-
C.
Tiruchirappalli Junction railway station
Tiruchirappalli Junction railway station is a major railway hub in Tamil Nadu, India, serving as one of the busiest and most important junctions in the Southern Railway zone.
-
D.
Chidambaram railway station
Chidambaram railway station is a regional rail hub in Tamil Nadu, India, serving the temple town of Chidambaram on the Chennai–Tiruchirappalli main line.
-
E.
Coimbatore Junction railway station
Coimbatore Junction railway station is a major railway hub in Tamil Nadu, India, serving as the primary rail gateway to the city of Coimbatore and an important junction on the Southern Railway network.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d822eb8f588190bf53445e730a934f |
completed | April 9, 2026, 10:06 p.m. |
| NER | Named-entity recognition | batch_69decfe64328819083ce42704cf0602d |
completed | April 14, 2026, 11:38 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fe389bc06c8190a8269c07677d9c35 |
completed | May 8, 2026, 7:25 p.m. |
Created at: April 10, 2026, 1:50 a.m.