Triple

T1688874
Position Surface form Disambiguated ID Type / Status
Subject Vijayawada E36504 entity
Predicate railwayZone P15232 FINISHED
Object 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.
 E191376 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 Central Railway zone | Statement: [Vijayawada, railwayZone, South Central Railway zone]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: South Central Railway zone
Context triple: [Vijayawada, railwayZone, South Central Railway zone]
  • A. 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.
  • B. 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.
  • C. Western Railway zone
    The Western Railway zone is one of the major zones of Indian Railways, overseeing rail operations across parts of western India including the states of Gujarat, Maharashtra, and Madhya Pradesh.
  • D. Northern Railway zone
    The Northern Railway zone is one of the largest and oldest zones of Indian Railways, overseeing extensive rail operations across North India from its headquarters in New Delhi.
  • E. Eastern Railway
    Eastern Railway is one of the major zones of Indian Railways, operating extensive rail services primarily across eastern India.
  • 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 Central Railway zone
Triple: [Vijayawada, railwayZone, South Central Railway zone]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: South Central Railway zone
Target entity description: 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.
  • A. 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.
  • B. 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.
  • C. Western Railway zone
    The Western Railway zone is one of the major zones of Indian Railways, overseeing rail operations across parts of western India including the states of Gujarat, Maharashtra, and Madhya Pradesh.
  • D. Northern Railway zone
    The Northern Railway zone is one of the largest and oldest zones of Indian Railways, overseeing extensive rail operations across North India from its headquarters in New Delhi.
  • E. Eastern Railway
    Eastern Railway is one of the major zones of Indian Railways, operating extensive rail services primarily across eastern India.
  • 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_69a886151508819084fa7f1ce6e05577 completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69aa6296655c8190835ec0d20f7460ca completed March 6, 2026, 5:13 a.m.
NED1 Entity disambiguation (via context triple) batch_69ad7992792081909af4312ae8a448a2 completed March 8, 2026, 1:28 p.m.
NEDg Description generation batch_69ad7ab4aca48190936384bfa1cdeccf completed March 8, 2026, 1:33 p.m.
NED2 Entity disambiguation (via description) batch_69ad7b34c3248190bb93769e55df7189 completed March 8, 2026, 1:35 p.m.
Created at: March 4, 2026, 7:29 p.m.