Triple
T14046896
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chennai railway division |
E337978
|
entity |
| Predicate | hasRoute |
P4374
|
FINISHED |
| Object | Chennai Central–Tiruvallur line |
E1076145
|
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: Chennai Central–Tiruvallur line | Statement: [Chennai railway division, hasRoute, Chennai Central–Tiruvallur line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Central–Tiruvallur line Context triple: [Chennai railway division, hasRoute, Chennai Central–Tiruvallur line]
-
A.
Chennai Egmore–Villupuram line
The Chennai Egmore–Villupuram line is a key railway corridor in Tamil Nadu connecting Chennai with the southern parts of the state and serving as an important route for both passenger and freight trains.
-
B.
Chennai Central–Katpadi–Jolarpettai line
The Chennai Central–Katpadi–Jolarpettai line is a key railway corridor in Tamil Nadu that connects Chennai with important inland junctions, supporting both long-distance and regional rail traffic.
-
C.
Chennai Central–Arakkonam line
chosen
The Chennai Central–Arakkonam line is a major suburban and intercity railway corridor in Tamil Nadu, India, connecting Chennai with the town of Arakkonam and forming part of the busy Chennai railway network.
-
D.
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.
-
E.
Chennai Central–Gummidipundi line
The Chennai Central–Gummidipundi line is a suburban railway corridor in the Chennai metropolitan area that connects Chennai Central with the northern suburb of Gummidipundi, serving daily commuters and regional passengers.
- 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_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_69fd4c255d8c81908bdac0a28718563e |
completed | May 8, 2026, 2:36 a.m. |
Created at: April 9, 2026, 10:20 p.m.