Triple

T8911026
Position Surface form Disambiguated ID Type / Status
Subject Sidcup Line suburban services E212180 entity
Predicate usesRollingStock P5426 FINISHED
Object British Rail Class 376
The British Rail Class 376 is a type of electric multiple unit train operated by Southeastern for high-capacity suburban commuter services in the London area.
 E773528 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: British Rail Class 376 | Statement: [Sidcup Line suburban services, usesRollingStock, British Rail Class 376]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 376
Context triple: [Sidcup Line suburban services, usesRollingStock, British Rail Class 376]
  • A. British Rail Class 377
    The British Rail Class 377 is a fleet of electric multiple-unit commuter trains widely used in southeast England, particularly by Govia Thameslink Railway services.
  • B. British Rail Class 373
    The British Rail Class 373 is a high-speed electric multiple unit train designed for cross-Channel services through the Channel Tunnel, primarily operated by Eurostar between the UK and mainland Europe.
  • C. British Rail Class 365
    The British Rail Class 365 is a fleet of electric multiple-unit passenger trains built in the mid-1990s for suburban and regional services in southeast England and on the East Coast Main Line.
  • D. British Rail Class 466
    The British Rail Class 466 is a type of electric multiple unit train used on suburban and commuter services in Southeast England as part of the Networker family.
  • E. British Rail Class 317
    The British Rail Class 317 is a type of electric multiple unit train introduced in the early 1980s for commuter services in and around London and the East of England.
  • 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: British Rail Class 376
Triple: [Sidcup Line suburban services, usesRollingStock, British Rail Class 376]
Generated description
The British Rail Class 376 is a type of electric multiple unit train operated by Southeastern for high-capacity suburban commuter services in the London area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: British Rail Class 376
Target entity description: The British Rail Class 376 is a type of electric multiple unit train operated by Southeastern for high-capacity suburban commuter services in the London area.
  • A. British Rail Class 377
    The British Rail Class 377 is a fleet of electric multiple-unit commuter trains widely used in southeast England, particularly by Govia Thameslink Railway services.
  • B. British Rail Class 373
    The British Rail Class 373 is a high-speed electric multiple unit train designed for cross-Channel services through the Channel Tunnel, primarily operated by Eurostar between the UK and mainland Europe.
  • C. British Rail Class 365
    The British Rail Class 365 is a fleet of electric multiple-unit passenger trains built in the mid-1990s for suburban and regional services in southeast England and on the East Coast Main Line.
  • D. British Rail Class 466
    The British Rail Class 466 is a type of electric multiple unit train used on suburban and commuter services in Southeast England as part of the Networker family.
  • E. British Rail Class 317
    The British Rail Class 317 is a type of electric multiple unit train introduced in the early 1980s for commuter services in and around London and the East of England.
  • 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_69ca8393b1808190bd4336787ffa2c40 completed March 30, 2026, 2:07 p.m.
NER Named-entity recognition batch_69cc6523b9348190a7cefac9e73e2004 completed April 1, 2026, 12:21 a.m.
NED1 Entity disambiguation (via context triple) batch_69cfdb83445c819085be0b13517292c9 completed April 3, 2026, 3:23 p.m.
NEDg Description generation batch_69cfe012b3d48190ba38e8ee3bb0fc8b completed April 3, 2026, 3:43 p.m.
NED2 Entity disambiguation (via description) batch_69cfe060aaec8190af5f7dd8914f5325 completed April 3, 2026, 3:44 p.m.
Created at: March 30, 2026, 6:55 p.m.