Triple

T4795061

Position	Surface form	Disambiguated ID	Type / Status
Subject	Nagpur Junction railway station	`E106690`	entity
Predicate	railwayZone	`P15232`	FINISHED
Object	South East Central Railway zone The South East Central Railway zone is one of the zones of Indian Railways, headquartered at Bilaspur, that manages rail operations across parts of Chhattisgarh, Maharashtra, and Madhya Pradesh.	`E479952`	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: South East Central Railway zone | Statement: [Nagpur Junction railway station, railwayZone, South East Central Railway zone]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: South East Central Railway zone
Context triple: [Nagpur Junction railway station, railwayZone, South East Central Railway zone]

A. East Central Railway zone
The East Central Railway zone is one of the 19 railway zones in India, headquartered at Hajipur in Bihar, responsible for operating and managing rail transport across parts of Bihar, Jharkhand, Uttar Pradesh, and Madhya Pradesh.
B. South Central Railway zone
The South Central Railway zone is one of the 19 railway zones of Indian Railways, headquartered in Secunderabad, that oversees and operates rail services across parts of Telangana, Andhra Pradesh, Maharashtra, and neighboring regions.
C. West Central Railway zone
West Central Railway zone is one of the zones of Indian Railways, headquartered in Jabalpur, that manages and operates rail services across parts of central India.
D. North Central Railway zone
The North Central Railway zone is one of the 19 railway zones of Indian Railways, headquartered at Prayagraj, and is a major rail network serving parts of Uttar Pradesh, Madhya Pradesh, Rajasthan, and Haryana.
E. Central Railway zone
Central Railway zone is one of the major zones of Indian Railways, headquartered in Mumbai, overseeing key rail operations across Maharashtra and neighboring regions.
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: South East Central Railway zone
Triple: [Nagpur Junction railway station, railwayZone, South East Central Railway zone]

Generated description

The South East Central Railway zone is one of the zones of Indian Railways, headquartered at Bilaspur, that manages rail operations across parts of Chhattisgarh, Maharashtra, and Madhya Pradesh.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: South East Central Railway zone
Target entity description: The South East Central Railway zone is one of the zones of Indian Railways, headquartered at Bilaspur, that manages rail operations across parts of Chhattisgarh, Maharashtra, and Madhya Pradesh.

A. East Central Railway zone
The East Central Railway zone is one of the 19 railway zones in India, headquartered at Hajipur in Bihar, responsible for operating and managing rail transport across parts of Bihar, Jharkhand, Uttar Pradesh, and Madhya Pradesh.
B. South Central Railway zone
The South Central Railway zone is one of the 19 railway zones of Indian Railways, headquartered in Secunderabad, that oversees and operates rail services across parts of Telangana, Andhra Pradesh, Maharashtra, and neighboring regions.
C. West Central Railway zone
West Central Railway zone is one of the zones of Indian Railways, headquartered in Jabalpur, that manages and operates rail services across parts of central India.
D. North Central Railway zone
The North Central Railway zone is one of the 19 railway zones of Indian Railways, headquartered at Prayagraj, and is a major rail network serving parts of Uttar Pradesh, Madhya Pradesh, Rajasthan, and Haryana.
E. Central Railway zone
Central Railway zone is one of the major zones of Indian Railways, headquartered in Mumbai, overseeing key rail operations across Maharashtra and neighboring regions.
F. None of above. chosen

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_69bd43f591c881909e5a532388b0f3f3`	completed	March 20, 2026, 12:56 p.m.
NER	Named-entity recognition	`batch_69bd6609e9888190b49f99bb9fb2279d`	completed	March 20, 2026, 3:21 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69be778861a88190bf7c9f04d903a5e2`	completed	March 21, 2026, 10:48 a.m.
NEDg	Description generation	`batch_69be780ae75481909eb49592d052a572`	completed	March 21, 2026, 10:50 a.m.
NED2	Entity disambiguation (via description)	`batch_69be783867c481908440f6e92ba5ddb8`	completed	March 21, 2026, 10:51 a.m.

Created at: March 20, 2026, 1:22 p.m.