Triple

T13036583
Position Surface form Disambiguated ID Type / Status
Subject Southern Railway zone E326576 entity
Predicate formedByMergerOf P77 FINISHED
Object Madras and Southern Mahratta Railway
Madras and Southern Mahratta Railway was a major British-era railway company in southern India that operated extensive rail networks across the Madras Presidency and neighboring regions before being integrated into the post-independence Indian Railways system.
E1018625 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: Madras and Southern Mahratta Railway | Statement: [Southern Railway zone, formedByMergerOf, Madras and Southern Mahratta Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Madras and Southern Mahratta Railway
Context triple: [Southern Railway zone, formedByMergerOf, Madras and Southern Mahratta Railway]
  • A. Bombay, Baroda and Central India Railway
    The Bombay, Baroda and Central India Railway was a major British-era Indian railway company that operated extensive routes in western and central India before being absorbed into the Western Railway zone after independence.
  • B. Madras Railway Company
    The Madras Railway Company was a British-era railway company in colonial India that developed and operated key rail lines in southern India, including the early construction of the Nilgiri Mountain Railway.
  • C. Central Railway
    Central Railway is one of the major zones of Indian Railways, headquartered in Mumbai and responsible for operating key rail routes and suburban services in western and central India.
  • D. Bengal Nagpur Railway
    Bengal Nagpur Railway was a major British-era railway company in eastern and central India that played a key role in regional rail development before being absorbed into the post-independence Indian Railways system.
  • E. East Indian Railway Company
    The East Indian Railway Company was a major British colonial-era railway company that built and operated key rail lines in eastern and northern India during the 19th and early 20th centuries.
  • 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: Madras and Southern Mahratta Railway
Triple: [Southern Railway zone, formedByMergerOf, Madras and Southern Mahratta Railway]
Generated description
Madras and Southern Mahratta Railway was a major British-era railway company in southern India that operated extensive rail networks across the Madras Presidency and neighboring regions before being integrated into the post-independence Indian Railways system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Madras and Southern Mahratta Railway
Target entity description: Madras and Southern Mahratta Railway was a major British-era railway company in southern India that operated extensive rail networks across the Madras Presidency and neighboring regions before being integrated into the post-independence Indian Railways system.
  • A. Bombay, Baroda and Central India Railway
    The Bombay, Baroda and Central India Railway was a major British-era Indian railway company that operated extensive routes in western and central India before being absorbed into the Western Railway zone after independence.
  • B. Madras Railway Company
    The Madras Railway Company was a British-era railway company in colonial India that developed and operated key rail lines in southern India, including the early construction of the Nilgiri Mountain Railway.
  • C. Central Railway
    Central Railway is one of the major zones of Indian Railways, headquartered in Mumbai and responsible for operating key rail routes and suburban services in western and central India.
  • D. Bengal Nagpur Railway
    Bengal Nagpur Railway was a major British-era railway company in eastern and central India that played a key role in regional rail development before being absorbed into the post-independence Indian Railways system.
  • E. East Indian Railway Company
    The East Indian Railway Company was a major British colonial-era railway company that built and operated key rail lines in eastern and northern India during the 19th and early 20th centuries.
  • 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_69d8076cc45c81908123123f43e69266 completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69d97f2a71a0819098bb6cf8a4b2208a completed April 10, 2026, 10:52 p.m.
NED1 Entity disambiguation (via context triple) batch_69f6cbd12eec81908ad5dae638c2210e completed May 3, 2026, 4:15 a.m.
NEDg Description generation batch_69f6cdc285788190a05a51295306f087 completed May 3, 2026, 4:23 a.m.
NED2 Entity disambiguation (via description) batch_69f6ceafcca88190bcd65be3c4440987 completed May 3, 2026, 4:27 a.m.
Created at: April 9, 2026, 8:55 p.m.