Triple
T20825994
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | North–South Corridor (Lucknow Metro) |
E512699
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object | Uttar Pradesh Metro Rail Corporation |
—
|
NE NERFINISHED |
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: Uttar Pradesh Metro Rail Corporation | Statement: [North–South Corridor (Lucknow Metro), operator, Uttar Pradesh Metro Rail Corporation]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Uttar Pradesh Metro Rail Corporation Context triple: [North–South Corridor (Lucknow Metro), operator, Uttar Pradesh Metro Rail Corporation]
-
A.
Uttar Pradesh Metro Rail Corporation Limited
chosen
Uttar Pradesh Metro Rail Corporation Limited is a state-owned public transport agency responsible for developing, operating, and maintaining metro rail systems in cities across Uttar Pradesh, India.
-
B.
Noida Metro Rail Corporation
Noida Metro Rail Corporation is the government-backed organization responsible for developing, operating, and maintaining the metro rail network in Noida and Greater Noida, India.
-
C.
Delhi Metro Rail Corporation
Delhi Metro Rail Corporation is the state-owned company responsible for planning, constructing, and operating the Delhi Metro rapid transit system in India.
-
D.
Maharashtra Metro Rail Corporation Limited
Maharashtra Metro Rail Corporation Limited is a state-owned joint venture between the Government of India and the Government of Maharashtra responsible for planning, constructing, and operating metro rail systems in Maharashtra, including the Nagpur Metro.
-
E.
Nagpur Metro Rail Corporation Limited
Nagpur Metro Rail Corporation Limited is the special purpose vehicle responsible for planning, implementing, and operating the metro rail system in Nagpur, India.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (2 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_69e0b4ce39108190a6e8e5df4f1c8dc5 |
completed | April 16, 2026, 10:07 a.m. |
| NER | Named-entity recognition | batch_69e6c2fd8480819099930af691d97477 |
completed | April 21, 2026, 12:21 a.m. |
Created at: April 16, 2026, 12:41 p.m.