Triple
T7120146
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Park Street metro station |
E165927
|
entity |
| Predicate | line |
P1293
|
FINISHED |
| Object | North–South corridor of Kolkata Metro |
E162700
|
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: North–South corridor of Kolkata Metro | Statement: [Park Street metro station, line, North–South corridor of Kolkata Metro]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: North–South corridor of Kolkata Metro Context triple: [Park Street metro station, line, North–South corridor of Kolkata Metro]
-
A.
Kolkata Metro
chosen
Kolkata Metro is India’s oldest rapid transit system, serving as a major urban rail network for the city of Kolkata and its surrounding areas.
-
B.
Kolkata Suburban Railway (Howrah–Sealdah sections)
The Kolkata Suburban Railway (Howrah–Sealdah sections) is a major suburban rail system serving the Kolkata metropolitan area, connecting its key terminals at Howrah and Sealdah with extensive surrounding suburbs.
-
C.
Kolkata–Airport–New Town growth corridor
The Kolkata–Airport–New Town growth corridor is a major urban development belt in eastern Kolkata that links the city core with Netaji Subhas Chandra Bose International Airport and the planned township of New Town, fostering concentrated commercial, residential, and infrastructural expansion along its route.
-
D.
Howrah–Bardhaman chord line
The Howrah–Bardhaman chord line is a major suburban and intercity railway corridor in West Bengal, India, connecting Howrah with Bardhaman via a shorter, high-capacity route.
-
E.
Delhi–Kolkata rail corridor
The Delhi–Kolkata rail corridor is one of India’s busiest and most important railway routes, linking the national capital with the eastern metropolis through major northern and eastern cities.
- 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_69c6888227bc8190a1394679e3116f90 |
completed | March 27, 2026, 1:39 p.m. |
| NER | Named-entity recognition | batch_69c6e61ca6a88190a0eb9f287e3b723c |
completed | March 27, 2026, 8:18 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c7bf7c0bb88190ac03e2279512d837 |
completed | March 28, 2026, 11:46 a.m. |
Created at: March 27, 2026, 2:43 p.m.