Triple

T1003251
Position Surface form Disambiguated ID Type / Status
Subject Coast Starlight E21649 entity
Predicate predecessorService P22193 FINISHED
Object Starlight (Southern Pacific train)
Starlight (Southern Pacific train) was a streamlined passenger train operated by the Southern Pacific Railroad along the U.S. West Coast, serving as an important long-distance service before being succeeded by Amtrak’s Coast Starlight.
E21649 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: Starlight (Southern Pacific train) | Statement: [Coast Starlight, predecessorService, Starlight (Southern Pacific train)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Starlight (Southern Pacific train)
Context triple: [Coast Starlight, predecessorService, Starlight (Southern Pacific train)]
  • A. Silver Star (train)
    The Silver Star is an Amtrak long-distance passenger train that operates between New York City and Miami, serving major cities along the U.S. East Coast.
  • B. Crescent (train)
    The Crescent is a long-distance Amtrak passenger train that runs daily between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
  • C. California Zephyr
    The California Zephyr is a long-distance passenger train route in the United States that runs through the Rocky Mountains and Sierra Nevada, often regarded as one of the most scenic rail journeys in North America.
  • D. Auto Train
    Auto Train is a long-distance Amtrak service that carries both passengers and their vehicles nonstop between the Washington, D.C. area and central Florida.
  • E. Coast Starlight
    Coast Starlight is a long-distance Amtrak passenger train renowned for its scenic route along the U.S. West Coast between Los Angeles and Seattle.
  • 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: Starlight (Southern Pacific train)
Triple: [Coast Starlight, predecessorService, Starlight (Southern Pacific train)]
Generated description
Starlight (Southern Pacific train) was a streamlined passenger train operated by the Southern Pacific Railroad along the U.S. West Coast, serving as an important long-distance service before being succeeded by Amtrak’s Coast Starlight.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Starlight (Southern Pacific train)
Target entity description: Starlight (Southern Pacific train) was a streamlined passenger train operated by the Southern Pacific Railroad along the U.S. West Coast, serving as an important long-distance service before being succeeded by Amtrak’s Coast Starlight.
  • A. Silver Star (train)
    The Silver Star is an Amtrak long-distance passenger train that operates between New York City and Miami, serving major cities along the U.S. East Coast.
  • B. Crescent (train)
    The Crescent is a long-distance Amtrak passenger train that runs daily between New York City and New Orleans, serving major cities along the U.S. East Coast and Deep South.
  • C. California Zephyr
    The California Zephyr is a long-distance passenger train route in the United States that runs through the Rocky Mountains and Sierra Nevada, often regarded as one of the most scenic rail journeys in North America.
  • D. Auto Train
    Auto Train is a long-distance Amtrak service that carries both passengers and their vehicles nonstop between the Washington, D.C. area and central Florida.
  • E. Coast Starlight chosen
    Coast Starlight is a long-distance Amtrak passenger train renowned for its scenic route along the U.S. West Coast between Los Angeles and Seattle.
  • F. None of above.

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_69a493c53e648190ae8cb76c433fd9a7 completed March 1, 2026, 7:30 p.m.
NER Named-entity recognition batch_69a4b7570b388190ada9693935792a58 completed March 1, 2026, 10:01 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac2a1ecddc8190b954d16c6e269498 completed March 7, 2026, 1:37 p.m.
NEDg Description generation batch_69ac2a8dd818819088e6140e9a12594b completed March 7, 2026, 1:39 p.m.
NED2 Entity disambiguation (via description) batch_69ac2af2efd88190b1da673aa3ead5fd completed March 7, 2026, 1:41 p.m.
Created at: March 1, 2026, 7:41 p.m.