Triple

T6263722
Position Surface form Disambiguated ID Type / Status
Subject British Rail first-generation DMUs E140360 entity
Predicate usedBy P260 FINISHED
Object Southern Region of British Railways E409292 NE FINISHED

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: Southern Region of British Railways | Statement: [British Rail first-generation DMUs, usedBy, Southern Region of British Railways]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Southern Region of British Railways
Context triple: [British Rail first-generation DMUs, usedBy, Southern Region of British Railways]
  • A. Southern Region of British Railways chosen
    The Southern Region of British Railways was one of the post-nationalisation operating regions in the south of England, known for its dense commuter network and extensive electrified lines serving London and the surrounding areas.
  • B. British Railways Western Region
    British Railways Western Region was the post-nationalisation division of British Rail responsible for former Great Western Railway routes across western and southwestern England and South Wales.
  • C. British Rail Eastern Region
    British Rail Eastern Region was a major operating division of British Railways responsible for rail services across eastern England, inheriting much of the former London and North Eastern Railway network.
  • D. London Midland Region
    The London Midland Region was a major administrative division of British Railways responsible for rail services across central and north-western England and parts of Scotland after nationalisation in 1948.
  • E. British Railways London Midland Region
    British Railways London Midland Region was the post-nationalisation division of British Railways responsible for former London, Midland and Scottish Railway routes, including the operation of locomotives such as the LMS Black Five.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69c008c95c5c819084bd3dd56133d84d completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c06387fec0819095b47a37b9402aa9 completed March 22, 2026, 9:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69c5e3f7faf08190a349c9444135afb8 completed March 27, 2026, 1:57 a.m.
Created at: March 22, 2026, 4:25 p.m.