Triple
T14542187
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Vandalur railway station |
E341195
|
entity |
| Predicate | partOfNetwork |
P840
|
FINISHED |
| Object | Chennai Beach–Tambaram–Chengalpattu suburban section |
E1089513
|
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–Tambaram–Chengalpattu suburban section | Statement: [Vandalur railway station, partOfNetwork, Chennai Beach–Tambaram–Chengalpattu suburban section]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Beach–Tambaram–Chengalpattu suburban section Context triple: [Vandalur railway station, partOfNetwork, Chennai Beach–Tambaram–Chengalpattu suburban section]
-
A.
Chennai Beach–Tambaram–Chengalpattu line
chosen
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 Beach–Tambaram section
The Chennai Beach–Tambaram section is a key suburban railway corridor in Chennai, India, connecting the city’s coastal terminus with its southern suburbs and serving as one of the busiest commuter routes in the region.
-
C.
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.
-
D.
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.
-
E.
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.
- 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_69d822db9c8481908213ceb39585f792 |
completed | April 9, 2026, 10:06 p.m. |
| NER | Named-entity recognition | batch_69deb1be5a8081909bf727e28a5bba4a |
completed | April 14, 2026, 9:29 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fd94afc95c8190ae4aff12c9d69c88 |
completed | May 8, 2026, 7:45 a.m. |
Created at: April 10, 2026, 1:22 a.m.