Triple

T12314683
Position Surface form Disambiguated ID Type / Status
Subject TfL Rail E293569 entity
Predicate fleetType P6198 FINISHED
Object Class 315 electric multiple unit
The Class 315 electric multiple unit is a type of British suburban electric train built in the early 1980s for commuter services in and around London.
 E976519 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: Class 315 electric multiple unit | Statement: [TfL Rail, fleetType, Class 315 electric multiple unit]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Class 315 electric multiple unit
Context triple: [TfL Rail, fleetType, Class 315 electric multiple unit]
  • A. Class 317 electric multiple unit
    The Class 317 electric multiple unit is a type of British suburban electric train introduced in the early 1980s for commuter services on 25 kV AC overhead electrified routes.
  • B. Class 319 electric multiple unit
    The Class 319 electric multiple unit is a dual-voltage British commuter train class introduced in the late 1980s for services on routes such as Thameslink, capable of operating on both overhead and third-rail electrification systems.
  • C. Class 321 electric multiple unit
    The Class 321 electric multiple unit is a British suburban and commuter train type introduced in the late 1980s for high-capacity, overhead-electrified passenger services.
  • D. Class 323 electric multiple unit
    The Class 323 electric multiple unit is a type of British suburban electric train widely used for high-frequency commuter services around cities such as Birmingham and Manchester.
  • E. Class 365 electric multiple unit
    The Class 365 electric multiple unit is a British dual-voltage commuter train type introduced in the 1990s for high-frequency suburban and regional services, primarily around London and the southeast.
  • 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: Class 315 electric multiple unit
Triple: [TfL Rail, fleetType, Class 315 electric multiple unit]
Generated description
The Class 315 electric multiple unit is a type of British suburban electric train built in the early 1980s for commuter services in and around London.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Class 315 electric multiple unit
Target entity description: The Class 315 electric multiple unit is a type of British suburban electric train built in the early 1980s for commuter services in and around London.
  • A. Class 317 electric multiple unit
    The Class 317 electric multiple unit is a type of British suburban electric train introduced in the early 1980s for commuter services on 25 kV AC overhead electrified routes.
  • B. Class 319 electric multiple unit
    The Class 319 electric multiple unit is a dual-voltage British commuter train class introduced in the late 1980s for services on routes such as Thameslink, capable of operating on both overhead and third-rail electrification systems.
  • C. Class 321 electric multiple unit
    The Class 321 electric multiple unit is a British suburban and commuter train type introduced in the late 1980s for high-capacity, overhead-electrified passenger services.
  • D. Class 323 electric multiple unit
    The Class 323 electric multiple unit is a type of British suburban electric train widely used for high-frequency commuter services around cities such as Birmingham and Manchester.
  • E. Class 365 electric multiple unit
    The Class 365 electric multiple unit is a British dual-voltage commuter train type introduced in the 1990s for high-frequency suburban and regional services, primarily around London and the southeast.
  • 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_69d6ab6a2b50819082f6aedd32ed608a completed April 8, 2026, 7:24 p.m.
NER Named-entity recognition batch_69d93f05186481909c024a933b4f6c60 completed April 10, 2026, 6:18 p.m.
NED1 Entity disambiguation (via context triple) batch_69f61e86d45881909a9a3c09df0b78f1 completed May 2, 2026, 3:55 p.m.
NEDg Description generation batch_69f622a646c481908164ae5387625bb4 completed May 2, 2026, 4:13 p.m.
NED2 Entity disambiguation (via description) batch_69f623f5aa608190bce3e62e08077216 completed May 2, 2026, 4:19 p.m.
Created at: April 8, 2026, 9:53 p.m.