Triple

T3604235
Position Surface form Disambiguated ID Type / Status
Subject PRR K4s E76330 entity
Predicate precededByClass P10130 FINISHED
Object PRR K2
The PRR K2 was an early class of steam locomotives used by the Pennsylvania Railroad, serving as a predecessor to the more famous K4s Pacific-type engines.
E371411 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: PRR K2 | Statement: [PRR K4s, precededByClass, PRR K2]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: PRR K2
Context triple: [PRR K4s, precededByClass, PRR K2]
  • A. PRR K4s
    The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
  • B. PRR T1
    The PRR T1 was a class of streamlined 4-4-4-4 duplex steam locomotives built for the Pennsylvania Railroad in the 1940s, known for their high-speed passenger service and distinctive Art Deco styling.
  • C. GG1 electric locomotive
    The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
  • D. CP Class 2240 EMU
    The CP Class 2240 EMU is a series of electric multiple unit trains operated by Comboios de Portugal, primarily used for suburban and regional passenger services.
  • E. EMD GP40-2H
    The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
  • 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: PRR K2
Triple: [PRR K4s, precededByClass, PRR K2]
Generated description
The PRR K2 was an early class of steam locomotives used by the Pennsylvania Railroad, serving as a predecessor to the more famous K4s Pacific-type engines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: PRR K2
Target entity description: The PRR K2 was an early class of steam locomotives used by the Pennsylvania Railroad, serving as a predecessor to the more famous K4s Pacific-type engines.
  • A. PRR K4s
    The PRR K4s was a class of iconic 4-6-2 "Pacific" steam locomotives that served as the primary passenger power for the Pennsylvania Railroad in the first half of the 20th century.
  • B. PRR T1
    The PRR T1 was a class of streamlined 4-4-4-4 duplex steam locomotives built for the Pennsylvania Railroad in the 1940s, known for their high-speed passenger service and distinctive Art Deco styling.
  • C. GG1 electric locomotive
    The GG1 electric locomotive was a streamlined, high-speed electric locomotive class that became an iconic workhorse of American railroading, particularly in the Northeast corridor, during much of the 20th century.
  • D. CP Class 2240 EMU
    The CP Class 2240 EMU is a series of electric multiple unit trains operated by Comboios de Portugal, primarily used for suburban and regional passenger services.
  • E. EMD GP40-2H
    The EMD GP40-2H is a rebuilt, passenger-equipped variant of the EMD GP40-2 diesel-electric locomotive, featuring head-end power for commuter rail service.
  • 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_69ad85d93dcc819094fba90cf70f4996 completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adc1e07bc481908d9fce18d36d8e0d completed March 8, 2026, 6:37 p.m.
NED1 Entity disambiguation (via context triple) batch_69b40320a0308190b2f358fe1488ed98 completed March 13, 2026, 12:29 p.m.
NEDg Description generation batch_69b4041bc85c8190948b7e47aef0e0d0 completed March 13, 2026, 12:33 p.m.
NED2 Entity disambiguation (via description) batch_69b408778220819086935bfa9c0dd4fd completed March 13, 2026, 12:52 p.m.
Created at: March 8, 2026, 3:22 p.m.