Triple

T5219718
Position Surface form Disambiguated ID Type / Status
Subject Pacific Parlour Car E117839 entity
Predicate operatedOnLine P15252 FINISHED
Object Los Angeles–Seattle rail corridor
The Los Angeles–Seattle rail corridor is a major long-distance passenger rail route in the western United States, connecting Southern California with the Pacific Northwest along the coast.
E504057 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: Los Angeles–Seattle rail corridor | Statement: [Pacific Parlour Car, operatedOnLine, Los Angeles–Seattle rail corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Los Angeles–Seattle rail corridor
Context triple: [Pacific Parlour Car, operatedOnLine, Los Angeles–Seattle rail corridor]
  • A. Empire Corridor
    The Empire Corridor is a major passenger rail route in New York State, running from New York City through the Hudson Valley and up to cities such as Albany and Buffalo.
  • B. Los Angeles–New Orleans rail corridor
    The Los Angeles–New Orleans rail corridor is a major transcontinental rail route linking Southern California to the U.S. Gulf Coast, used for both freight and long-distance passenger service.
  • C. BNSF Seattle Subdivision
    The BNSF Seattle Subdivision is a major freight and passenger rail corridor in the Seattle area, forming part of BNSF Railway’s main line through the Pacific Northwest.
  • D. Peninsula rail corridor
    The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
  • E. West Coast Express
    West Coast Express is a commuter rail service in British Columbia, Canada, that operates weekday trains between downtown Vancouver and its eastern suburbs along the north shore of the Fraser River.
  • 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: Los Angeles–Seattle rail corridor
Triple: [Pacific Parlour Car, operatedOnLine, Los Angeles–Seattle rail corridor]
Generated description
The Los Angeles–Seattle rail corridor is a major long-distance passenger rail route in the western United States, connecting Southern California with the Pacific Northwest along the coast.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Los Angeles–Seattle rail corridor
Target entity description: The Los Angeles–Seattle rail corridor is a major long-distance passenger rail route in the western United States, connecting Southern California with the Pacific Northwest along the coast.
  • A. Empire Corridor
    The Empire Corridor is a major passenger rail route in New York State, running from New York City through the Hudson Valley and up to cities such as Albany and Buffalo.
  • B. Los Angeles–New Orleans rail corridor
    The Los Angeles–New Orleans rail corridor is a major transcontinental rail route linking Southern California to the U.S. Gulf Coast, used for both freight and long-distance passenger service.
  • C. BNSF Seattle Subdivision
    The BNSF Seattle Subdivision is a major freight and passenger rail corridor in the Seattle area, forming part of BNSF Railway’s main line through the Pacific Northwest.
  • D. Peninsula rail corridor
    The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
  • E. West Coast Express
    West Coast Express is a commuter rail service in British Columbia, Canada, that operates weekday trains between downtown Vancouver and its eastern suburbs along the north shore of the Fraser River.
  • 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_69bd4465e03081909bfcfd7113062590 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd7ab6e63c8190964b2b65a0206134 completed March 20, 2026, 4:49 p.m.
NED1 Entity disambiguation (via context triple) batch_69beeff0b15081908741aadfd351811c completed March 21, 2026, 7:22 p.m.
NEDg Description generation batch_69bef309c230819094ed6ae3fefe6e5b completed March 21, 2026, 7:35 p.m.
NED2 Entity disambiguation (via description) batch_69bef36c88f4819082931dbe1bb13f89 completed March 21, 2026, 7:37 p.m.
Created at: March 20, 2026, 1:48 p.m.