Triple
T13998380
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Beach railway station, Chennai |
E336759
|
entity |
| Predicate | terminusFor |
P388
|
FINISHED |
| Object | Chennai Beach–Tambaram suburban line |
E740575
|
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 suburban line | Statement: [Beach railway station, Chennai, terminusFor, Chennai Beach–Tambaram suburban line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Beach–Tambaram suburban line Context triple: [Beach railway station, Chennai, terminusFor, Chennai Beach–Tambaram suburban line]
-
A.
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.
-
B.
Chennai Central–Arakkonam line
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.
-
C.
Chennai Beach–Tambaram section
chosen
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.
-
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–Madurai line
The Chennai–Madurai line is a major railway route in the Indian state of Tamil Nadu that connects the capital city Chennai with the important cultural and commercial center of Madurai.
- 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_69d81c645c5c8190b1fd16a285a1b78a |
completed | April 9, 2026, 9:38 p.m. |
| NER | Named-entity recognition | batch_69de2eb68ba88190bfaf10777d607bf3 |
completed | April 14, 2026, 12:10 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fcdef5e0648190ace4ec1605968e30 |
completed | May 7, 2026, 6:50 p.m. |
Created at: April 9, 2026, 10:19 p.m.