Triple
T14152929
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Yellow Line (Namma Metro) |
E350731
|
entity |
| Predicate | operator |
P179
|
FINISHED |
| Object |
Bangalore Metro Rail Corporation Limited
Bangalore Metro Rail Corporation Limited is the government-owned company responsible for developing, operating, and maintaining the Namma Metro rapid transit system in Bengaluru, India.
|
E340575
|
NE FINISHED |
How this triple was built (4 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: Bangalore Metro Rail Corporation Limited | Statement: [Yellow Line (Namma Metro), operator, Bangalore Metro Rail Corporation Limited]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Bangalore Metro Rail Corporation Limited Context triple: [Yellow Line (Namma Metro), operator, Bangalore Metro Rail Corporation Limited]
-
A.
Bangalore Metro
Bangalore Metro is a rapid transit system serving the city of Bengaluru, India, providing an elevated and underground rail network to ease urban transportation and reduce traffic congestion.
-
B.
L&T Metro Rail (Hyderabad) Limited
L&T Metro Rail (Hyderabad) Limited is a special purpose vehicle of Larsen & Toubro responsible for developing, operating, and maintaining the Hyderabad Metro rail project under a public-private partnership.
-
C.
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.
-
D.
Uttar Pradesh Metro Rail Corporation Limited
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.
-
E.
Mumbai Metro One Private Limited
Mumbai Metro One Private Limited is a special purpose vehicle company responsible for operating and maintaining Mumbai Metro’s Line 1 between Versova and Ghatkopar.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Bangalore Metro Rail Corporation Limited Triple: [Yellow Line (Namma Metro), operator, Bangalore Metro Rail Corporation Limited]
Generated description
Bangalore Metro Rail Corporation Limited is the government-owned company responsible for developing, operating, and maintaining the Namma Metro rapid transit system in Bengaluru, India.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Bangalore Metro Rail Corporation Limited Target entity description: Bangalore Metro Rail Corporation Limited is the government-owned company responsible for developing, operating, and maintaining the Namma Metro rapid transit system in Bengaluru, India.
-
A.
Bangalore Metro
chosen
Bangalore Metro is a rapid transit system serving the city of Bengaluru, India, providing an elevated and underground rail network to ease urban transportation and reduce traffic congestion.
-
B.
L&T Metro Rail (Hyderabad) Limited
L&T Metro Rail (Hyderabad) Limited is a special purpose vehicle of Larsen & Toubro responsible for developing, operating, and maintaining the Hyderabad Metro rail project under a public-private partnership.
-
C.
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.
-
D.
Uttar Pradesh Metro Rail Corporation Limited
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.
-
E.
Mumbai Metro One Private Limited
Mumbai Metro One Private Limited is a special purpose vehicle company responsible for operating and maintaining Mumbai Metro’s Line 1 between Versova and Ghatkopar.
- F. None of above.
Provenance (5 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_69d8278775fc8190b0802d22ca2f495d |
completed | April 9, 2026, 10:26 p.m. |
| NER | Named-entity recognition | batch_69de6133754881908e1e97db71772deb |
completed | April 14, 2026, 3:45 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fcf7ea34408190830263d7f5a88ce9 |
completed | May 7, 2026, 8:36 p.m. |
| NEDg | Description generation | batch_69fd067e73708190adcb4e1c2fbf210d |
completed | May 7, 2026, 9:39 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69fd0c5161dc8190a923c5b00dc5b53a |
completed | May 7, 2026, 10:04 p.m. |
Created at: April 10, 2026, 12:57 a.m.