Triple

T20921509
Position Surface form Disambiguated ID Type / Status
Subject Long Island Rail Road rolling stock E515218 entity
Predicate historicallyIncludedRollingStockSeries P29565 FINISHED
Object MP54 electric multiple unit NE NERFINISHED

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: MP54 electric multiple unit | Statement: [Long Island Rail Road rolling stock, historicallyIncludedRollingStockSeries, MP54 electric multiple unit]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MP54 electric multiple unit
Context triple: [Long Island Rail Road rolling stock, historicallyIncludedRollingStockSeries, MP54 electric multiple unit]
  • A. M9 electric multiple unit
    The M9 electric multiple unit is a modern commuter rail train used by the Long Island Rail Road, designed to replace older fleets with improved performance, safety, and passenger amenities.
  • B. Civia EMU
    Civia EMU is a class of electric multiple unit commuter trains used by Spain’s Renfe for suburban and regional passenger services.
  • C. M8 electric multiple unit
    The M8 electric multiple unit is a modern commuter rail train used by Metro-North Railroad, featuring stainless-steel cars with AC propulsion and designed for operation on both overhead catenary and third-rail power systems.
  • D. M7 electric multiple unit
    The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
  • E. EP2D electric multiple unit
    The EP2D electric multiple unit is a modern Russian commuter train set designed for suburban and urban passenger services, featuring improved energy efficiency, comfort, and accessibility compared to earlier EMU models.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MP54 electric multiple unit
Target entity description: The MP54 electric multiple unit was an early 20th-century steel commuter railcar widely used on electrified suburban services in the northeastern United States, particularly around New York and Philadelphia.
  • A. M9 electric multiple unit
    The M9 electric multiple unit is a modern commuter rail train used by the Long Island Rail Road, designed to replace older fleets with improved performance, safety, and passenger amenities.
  • B. Civia EMU
    Civia EMU is a class of electric multiple unit commuter trains used by Spain’s Renfe for suburban and regional passenger services.
  • C. M8 electric multiple unit
    The M8 electric multiple unit is a modern commuter rail train used by Metro-North Railroad, featuring stainless-steel cars with AC propulsion and designed for operation on both overhead catenary and third-rail power systems.
  • D. M7 electric multiple unit
    The M7 electric multiple unit is a modern commuter rail car class built for high-frequency, third-rail electrified service, notably operating on New York’s Long Island Rail Road and similar regional rail networks.
  • E. EP2D electric multiple unit
    The EP2D electric multiple unit is a modern Russian commuter train set designed for suburban and urban passenger services, featuring improved energy efficiency, comfort, and accessibility compared to earlier EMU models.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: historicallyIncludedRollingStockSeries
Context triple: [Long Island Rail Road rolling stock, historicallyIncludedRollingStockSeries, MP54 electric multiple unit]
  • A. formerRollingStock chosen
    Indicates that an entity was previously used as rolling stock (e.g., railway vehicles) but no longer serves in that capacity.
  • B. notableRollingStock
    Indicates that there is a notable or historically significant piece of rolling stock (such as a train car or locomotive) associated with the subject.
  • C. introducedRollingStock
    Indicates that an entity caused new rolling stock (such as trains or rail vehicles) to be put into service or use.
  • D. laterRollingStock
    Indicates that one piece of rolling stock comes into use or service at a later time than another piece of rolling stock.
  • E. rollingStockEra
    Indicates the historical or operational time period during which a particular piece of rolling stock is designed to represent or is considered appropriate.
  • F. None of above.

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_69e0b4f9d5ec8190bb2bd27350ed341c completed April 16, 2026, 10:07 a.m.
NER Named-entity recognition batch_69e6f64e56bc81908aa86f2176fcc0db completed April 21, 2026, 4 a.m.
PD Predicate disambiguation batch_69e5c9af1fe08190953366a466950140 completed April 20, 2026, 6:37 a.m.
Created at: April 16, 2026, 12:48 p.m.