Triple

T9662935
Position Surface form Disambiguated ID Type / Status
Subject Birmingham New Street to Liverpool Lime Street E233630 entity
Predicate servedByTrainClass P56947 FINISHED
Object British Rail Class 350
The British Rail Class 350 is a family of electric multiple-unit passenger trains used for regional and intercity services on the UK rail network.
E813927 NE FINISHED

How this triple was built (5 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 350 | Statement: [Birmingham New Street to Liverpool Lime Street, servedByTrainClass, British Rail Class 350]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: British Rail Class 350
Context triple: [Birmingham New Street to Liverpool Lime Street, servedByTrainClass, British Rail Class 350]
  • A. British Rail Class 390
    The British Rail Class 390 is a high-speed tilting electric multiple unit train used by Avanti West Coast on the West Coast Main Line in the United Kingdom.
  • B. British Rail Class 360/1
    The British Rail Class 360/1 is a subseries of electric multiple-unit commuter trains used in the UK, primarily designed for outer-suburban and airport services.
  • C. British Rail Class 450
    The British Rail Class 450 is a fleet of electric multiple unit commuter trains operated in southern England, particularly on suburban and regional services.
  • D. British Rail Class 375
    The British Rail Class 375 is a fleet of electric multiple-unit passenger trains operated by Southeastern on suburban and regional services in southeast England.
  • E. British Rail Class 175
    The British Rail Class 175 is a diesel multiple-unit passenger train used on regional and intercity services in the United Kingdom, particularly across Wales and bordering regions.
  • 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 350
Triple: [Birmingham New Street to Liverpool Lime Street, servedByTrainClass, British Rail Class 350]
Generated description
The British Rail Class 350 is a family of electric multiple-unit passenger trains used for regional and intercity services on the UK rail network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: British Rail Class 350
Target entity description: The British Rail Class 350 is a family of electric multiple-unit passenger trains used for regional and intercity services on the UK rail network.
  • A. British Rail Class 390
    The British Rail Class 390 is a high-speed tilting electric multiple unit train used by Avanti West Coast on the West Coast Main Line in the United Kingdom.
  • B. British Rail Class 360/1
    The British Rail Class 360/1 is a subseries of electric multiple-unit commuter trains used in the UK, primarily designed for outer-suburban and airport services.
  • C. British Rail Class 450
    The British Rail Class 450 is a fleet of electric multiple unit commuter trains operated in southern England, particularly on suburban and regional services.
  • D. British Rail Class 375
    The British Rail Class 375 is a fleet of electric multiple-unit passenger trains operated by Southeastern on suburban and regional services in southeast England.
  • E. British Rail Class 175
    The British Rail Class 175 is a diesel multiple-unit passenger train used on regional and intercity services in the United Kingdom, particularly across Wales and bordering regions.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: servedByTrainClass
Context triple: [Birmingham New Street to Liverpool Lime Street, servedByTrainClass, British Rail Class 350]
  • A. trainTypeUsed chosen
    Indicates that a specific type or category of train is employed or operated in a given context or service.
  • B. railwayTypeServed
    Indicates the type of railway system or service that a given entity (such as a station, line, or facility) is designed to serve or accommodate.
  • C. servedByRailroad
    Indicates that a location or facility is provided with transportation or service by a railroad line or company.
  • D. seatClass
    Indicates the travel or seating category assigned to a passenger or seat (e.g., economy, business, first class).
  • E. railServiceType
    Indicates the specific category or type of rail service that applies to the relationship between the involved entities (e.g., local, express, freight).
  • F. None of above.

Provenance (6 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_69ca848d3b6c8190ae98ea554dea58df completed March 30, 2026, 2:11 p.m.
NER Named-entity recognition batch_69cd9c0cde048190b5a8e1548825d4d9 completed April 1, 2026, 10:28 p.m.
NED1 Entity disambiguation (via context triple) batch_69d18a1422348190967943b0d4da8efd completed April 4, 2026, 10 p.m.
NEDg Description generation batch_69d18b66e79881909228aa3e1e34af26 completed April 4, 2026, 10:06 p.m.
NED2 Entity disambiguation (via description) batch_69d18bbfb1808190bd7f7ff4326af72c completed April 4, 2026, 10:07 p.m.
PD Predicate disambiguation batch_69ccd5b3239c8190b3ae3b9bd121e4bd completed April 1, 2026, 8:22 a.m.
Created at: March 30, 2026, 8:14 p.m.