Triple
T14046923
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station |
E337979
|
entity |
| Predicate | isMainRailTerminusOf |
P21210
|
FINISHED |
| Object | Chennai |
E12324
|
NE FINISHED |
How this triple was built (3 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 | Statement: [Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station, isMainRailTerminusOf, Chennai]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Context triple: [Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station, isMainRailTerminusOf, Chennai]
-
A.
Chennai
chosen
Chennai is a major coastal metropolis in southern India, serving as the capital of Tamil Nadu and a key cultural, economic, and automotive hub.
-
B.
Tiruchirappalli
Tiruchirappalli is a major city in the Indian state of Tamil Nadu, known for its historic temples, educational institutions, and strategic location along the Kaveri River.
-
C.
Madras
Madras is a small city in central Oregon known as an agricultural hub and gateway to outdoor recreation in the surrounding high desert region.
-
D.
Madras
Madras is an unincorporated community located in Coweta County in the U.S. state of Georgia.
-
E.
Coimbatore
Coimbatore is a major industrial and educational city in the Indian state of Tamil Nadu, known especially for its textile, engineering, and manufacturing industries.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: isMainRailTerminusOf Context triple: [Puratchi Thalaivar Dr. M.G. Ramachandran Central Railway Station, isMainRailTerminusOf, Chennai]
-
A.
railroadTerminusFor
chosen
Indicates that one location serves as the end point or final station of a particular railroad line for another location.
-
B.
railLineTerminus
Indicates that a rail line ends or terminates at the specified location or station.
-
C.
isOnlyRailStationServing
Indicates that one rail station is the sole station providing service to a particular area, route, or entity, with no alternative rail stations serving it.
-
D.
connectsToRailStation
Indicates that one entity has a direct link, route, or access connection to a rail station.
-
E.
railTerminus
Indicates that a railway line or service ends at a particular station or location, which serves as its final terminus.
- F. None of above.
Provenance (4 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_69d81c664e48819088cbd8f433aeffe5 |
completed | April 9, 2026, 9:38 p.m. |
| NER | Named-entity recognition | batch_69de312df37081909f45ce3e219af5dc |
completed | April 14, 2026, 12:21 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fd3d0008dc819088fcfbfe3640af47 |
completed | May 8, 2026, 1:31 a.m. |
| PD | Predicate disambiguation | batch_69de05ab36b48190920efb1869bdb1fe |
completed | April 14, 2026, 9:15 a.m. |
Created at: April 9, 2026, 10:20 p.m.