Triple
T14046897
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chennai railway division |
E337978
|
entity |
| Predicate | hasRoute |
P4374
|
FINISHED |
| Object | Chennai Beach–Velachery MRTS line |
E344405
|
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 Beach–Velachery MRTS line | Statement: [Chennai railway division, hasRoute, Chennai Beach–Velachery MRTS line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Beach–Velachery MRTS line Context triple: [Chennai railway division, hasRoute, Chennai Beach–Velachery MRTS line]
-
A.
Chennai Beach–Tambaram–Chengalpattu line
The Chennai Beach–Tambaram–Chengalpattu line is a key suburban railway corridor in the Chennai metropolitan area, carrying heavy commuter traffic between the city center and its southern suburbs.
-
B.
Chennai MRTS
chosen
Chennai MRTS is an elevated suburban railway network in Chennai, India, providing rapid transit services along key urban corridors and connecting with other city transport systems.
-
C.
Chennai Metro
Chennai Metro is a rapid transit system serving the Indian city of Chennai, providing urban rail connectivity across key residential, commercial, and industrial areas.
-
D.
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.
-
E.
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.
- 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_69fd54fa19c081908e6467ee7b79f02a |
completed | May 8, 2026, 3:14 a.m. |
Created at: April 9, 2026, 10:20 p.m.