Triple

T6811433
Position Surface form Disambiguated ID Type / Status
Subject Niles Canyon E156641 entity
Predicate operatedBy P86 FINISHED
Object Pacific Locomotive Association
The Pacific Locomotive Association is a nonprofit organization dedicated to preserving and operating historic railroad equipment, best known for running the heritage Niles Canyon Railway in California.
E620569 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: Pacific Locomotive Association | Statement: [Niles Canyon, operatedBy, Pacific Locomotive Association]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Pacific Locomotive Association
Context triple: [Niles Canyon, operatedBy, Pacific Locomotive Association]
  • A. Pan Am Railways
    Pan Am Railways was a regional freight railroad in New England, formerly known as Guilford Rail System, that operated an extensive network across the northeastern United States.
  • B. United States Railway Association
    The United States Railway Association was a U.S. government-created corporation responsible for restructuring and revitalizing bankrupt northeastern railroads in the 1970s, most notably through the formation of Conrail.
  • C. Association of American Railroads
    The Association of American Railroads is a trade group representing major freight and passenger railroads in North America, focusing on industry policy, safety standards, and technological research.
  • D. Conrail
    Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
  • E. NI Railways
    NI Railways is the primary passenger rail operator in Northern Ireland, running the region’s railway network and services.
  • 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: Pacific Locomotive Association
Triple: [Niles Canyon, operatedBy, Pacific Locomotive Association]
Generated description
The Pacific Locomotive Association is a nonprofit organization dedicated to preserving and operating historic railroad equipment, best known for running the heritage Niles Canyon Railway in California.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Pacific Locomotive Association
Target entity description: The Pacific Locomotive Association is a nonprofit organization dedicated to preserving and operating historic railroad equipment, best known for running the heritage Niles Canyon Railway in California.
  • A. Pan Am Railways
    Pan Am Railways was a regional freight railroad in New England, formerly known as Guilford Rail System, that operated an extensive network across the northeastern United States.
  • B. United States Railway Association
    The United States Railway Association was a U.S. government-created corporation responsible for restructuring and revitalizing bankrupt northeastern railroads in the 1970s, most notably through the formation of Conrail.
  • C. Association of American Railroads
    The Association of American Railroads is a trade group representing major freight and passenger railroads in North America, focusing on industry policy, safety standards, and technological research.
  • D. Conrail
    Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
  • E. NI Railways
    NI Railways is the primary passenger rail operator in Northern Ireland, running the region’s railway network and services.
  • 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_69c68828b26c819090fe9df7612bbc27 completed March 27, 2026, 1:37 p.m.
NER Named-entity recognition batch_69c6d327e37081909d576e6eff9eec97 completed March 27, 2026, 6:57 p.m.
NED1 Entity disambiguation (via context triple) batch_69c71aa7dc3c81909ef422b5c51ae6be completed March 28, 2026, 12:02 a.m.
NEDg Description generation batch_69c71e7cd6448190845888760c677eda completed March 28, 2026, 12:19 a.m.
NED2 Entity disambiguation (via description) batch_69c71edd37048190bf4de088ad9f11de completed March 28, 2026, 12:20 a.m.
Created at: March 27, 2026, 2:16 p.m.