Triple

T4056299
Position Surface form Disambiguated ID Type / Status
Subject MBTA Commuter Rail coaches E84701 entity
Predicate hasVariant P455 FINISHED
Object Rotem bi-level coach
The Rotem bi-level coach is a double-decker commuter rail passenger car built by Hyundai Rotem to increase capacity and comfort on services such as the MBTA Commuter Rail.
 E410815 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: Rotem bi-level coach | Statement: [MBTA Commuter Rail coaches, hasVariant, Rotem bi-level coach]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Rotem bi-level coach
Context triple: [MBTA Commuter Rail coaches, hasVariant, Rotem bi-level coach]
  • A. Bombardier BiLevel Coach
    The Bombardier BiLevel Coach is a double-decker commuter rail car widely used across North America to increase passenger capacity on regional and suburban train services.
  • B. Siemens Venture long-distance coach
    The Siemens Venture long-distance coach is a modern, intercity passenger railcar designed by Siemens for enhanced comfort, accessibility, and efficiency on long-distance routes in North America.
  • C. CAF Mark 5 sleeping coaches
    CAF Mark 5 sleeping coaches are modern, purpose-built overnight train carriages designed by Construcciones y Auxiliar de Ferrocarriles (CAF) to provide upgraded sleeper accommodation and amenities on long-distance services in the UK.
  • D. Corail coaches
    Corail coaches are a class of long-distance passenger railway carriages widely used in France for comfortable intercity services.
  • E. MCI D-Series coaches
    MCI D-Series coaches are a line of long-distance, intercity motorcoaches manufactured by Motor Coach Industries and widely used by major bus operators across North America.
  • 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: Rotem bi-level coach
Triple: [MBTA Commuter Rail coaches, hasVariant, Rotem bi-level coach]
Generated description
The Rotem bi-level coach is a double-decker commuter rail passenger car built by Hyundai Rotem to increase capacity and comfort on services such as the MBTA Commuter Rail.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Rotem bi-level coach
Target entity description: The Rotem bi-level coach is a double-decker commuter rail passenger car built by Hyundai Rotem to increase capacity and comfort on services such as the MBTA Commuter Rail.
  • A. Bombardier BiLevel Coach
    The Bombardier BiLevel Coach is a double-decker commuter rail car widely used across North America to increase passenger capacity on regional and suburban train services.
  • B. Siemens Venture long-distance coach
    The Siemens Venture long-distance coach is a modern, intercity passenger railcar designed by Siemens for enhanced comfort, accessibility, and efficiency on long-distance routes in North America.
  • C. CAF Mark 5 sleeping coaches
    CAF Mark 5 sleeping coaches are modern, purpose-built overnight train carriages designed by Construcciones y Auxiliar de Ferrocarriles (CAF) to provide upgraded sleeper accommodation and amenities on long-distance services in the UK.
  • D. Corail coaches
    Corail coaches are a class of long-distance passenger railway carriages widely used in France for comfortable intercity services.
  • E. MCI D-Series coaches
    MCI D-Series coaches are a line of long-distance, intercity motorcoaches manufactured by Motor Coach Industries and widely used by major bus operators across North America.
  • 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_69aed933bec881909edfa28ebb69c634 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aefbad953c81909d7b42fae5db9f25 completed March 9, 2026, 4:56 p.m.
NED1 Entity disambiguation (via context triple) batch_69b562a390e4819095cc06f15f6da3b8 completed March 14, 2026, 1:29 p.m.
NEDg Description generation batch_69b5637cd5b881909a930ecb33eed991 completed March 14, 2026, 1:32 p.m.
NED2 Entity disambiguation (via description) batch_69b564603b4881909e80970aa21e3db4 completed March 14, 2026, 1:36 p.m.
Created at: March 9, 2026, 3:38 p.m.