Triple
T14082301
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Saidapet |
E338896
|
entity |
| Predicate | metroCorridor |
P18378
|
FINISHED |
| Object | Chennai Metro Blue Line |
E68347
|
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 Metro Blue Line | Statement: [Saidapet, metroCorridor, Chennai Metro Blue Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chennai Metro Blue Line Context triple: [Saidapet, metroCorridor, Chennai Metro Blue Line]
-
A.
Chennai Metro
chosen
Chennai Metro is a rapid transit system serving the Indian city of Chennai, providing urban rail connectivity across key residential, commercial, and industrial areas.
-
B.
Chennai MRTS
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 Central Metro
Chennai Central Metro is a major underground interchange station in Chennai, India, connecting the Chennai Metro network with the city’s primary railway terminus and other urban transit services.
-
D.
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.
-
E.
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.
- 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: metroCorridor Context triple: [Saidapet, metroCorridor, Chennai Metro Blue Line]
-
A.
majorUrbanCorridor
Indicates a primary transportation route that connects significant urban areas and supports major flows of people, goods, or services between them.
-
B.
metroLineInaugurated
Indicates that a metro line was officially opened and began operation on a specific date or during a specific event.
-
C.
metroLineColor
Indicates the color assigned to a specific metro or subway line in a transit system.
-
D.
Purple Line Express
Indicates a transportation service or route designated as the "Purple Line" that operates with express (limited-stop) service between locations.
-
E.
subwayLine
chosen
Indicates that there is a subway line connection or service relationship between the referenced entities.
- 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_69d81c687b0c819087fd9ed4198403f8 |
completed | April 9, 2026, 9:38 p.m. |
| NER | Named-entity recognition | batch_69de5c5f759c81909bfd60ab35b0937b |
completed | April 14, 2026, 3:25 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fd7a2fdd7c8190b2ebf5a18c8039f2 |
completed | May 8, 2026, 5:52 a.m. |
| PD | Predicate disambiguation | batch_69de05b0e6c88190a819eeba0028981f |
completed | April 14, 2026, 9:15 a.m. |
Created at: April 9, 2026, 10:21 p.m.