Triple

T14223255
Position Surface form Disambiguated ID Type / Status
Subject Lincoln Service E352550 entity
Predicate serviceBrand P34842 FINISHED
Object Amtrak Lincoln Service
Amtrak Lincoln Service is a passenger rail service operated by Amtrak that runs between Chicago, Illinois, and St. Louis, Missouri, providing intercity transportation through central Illinois.
E1088610 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: Amtrak Lincoln Service | Statement: [Lincoln Service, serviceBrand, Amtrak Lincoln Service]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Amtrak Lincoln Service
Context triple: [Lincoln Service, serviceBrand, Amtrak Lincoln Service]
  • A. Amtrak Keystone Service
    Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
  • B. Amtrak Empire Service
    Amtrak Empire Service is a passenger rail route in New York State that connects New York City with upstate destinations such as Albany, Buffalo, and Niagara Falls.
  • C. Amtrak Valley Flyer
    Amtrak Valley Flyer is a regional passenger rail service operated by Amtrak in New England, providing connections between western Massachusetts and central Connecticut as part of the broader Northeast rail network.
  • D. Amtrak Piedmont
    Amtrak Piedmont is a state-supported passenger train service in North Carolina that operates between Raleigh and Charlotte, connecting several cities along the Piedmont corridor.
  • E. Amtrak Heartland Flyer
    The Amtrak Heartland Flyer is a daily passenger train route that operates between Oklahoma City, Oklahoma, and Fort Worth, Texas, providing regional rail service through the Southern Plains.
  • 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: Amtrak Lincoln Service
Triple: [Lincoln Service, serviceBrand, Amtrak Lincoln Service]
Generated description
Amtrak Lincoln Service is a passenger rail service operated by Amtrak that runs between Chicago, Illinois, and St. Louis, Missouri, providing intercity transportation through central Illinois.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Amtrak Lincoln Service
Target entity description: Amtrak Lincoln Service is a passenger rail service operated by Amtrak that runs between Chicago, Illinois, and St. Louis, Missouri, providing intercity transportation through central Illinois.
  • A. Amtrak Keystone Service
    Amtrak Keystone Service is a passenger rail service operated by Amtrak that runs primarily between New York City and Harrisburg, Pennsylvania, providing frequent regional connections along the Keystone Corridor.
  • B. Amtrak Empire Service
    Amtrak Empire Service is a passenger rail route in New York State that connects New York City with upstate destinations such as Albany, Buffalo, and Niagara Falls.
  • C. Amtrak Valley Flyer
    Amtrak Valley Flyer is a regional passenger rail service operated by Amtrak in New England, providing connections between western Massachusetts and central Connecticut as part of the broader Northeast rail network.
  • D. Amtrak Piedmont
    Amtrak Piedmont is a state-supported passenger train service in North Carolina that operates between Raleigh and Charlotte, connecting several cities along the Piedmont corridor.
  • E. Amtrak Heartland Flyer
    The Amtrak Heartland Flyer is a daily passenger train route that operates between Oklahoma City, Oklahoma, and Fort Worth, Texas, providing regional rail service through the Southern Plains.
  • 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_69d8278a06e481908b5d6af0a8afe737 completed April 9, 2026, 10:26 p.m.
NER Named-entity recognition batch_69de6227c288819081473ce44f9f0934 completed April 14, 2026, 3:49 p.m.
NED1 Entity disambiguation (via context triple) batch_69fd2813e55881909bdbc6f3c6ef572b completed May 8, 2026, 12:02 a.m.
NEDg Description generation batch_69fd2b0956948190bf654403ad0b154a completed May 8, 2026, 12:15 a.m.
NED2 Entity disambiguation (via description) batch_69fd2df66aa48190ae18a4ca1c099c25 completed May 8, 2026, 12:27 a.m.
Created at: April 10, 2026, 1:06 a.m.