Triple

T1922573
Position Surface form Disambiguated ID Type / Status
Subject Amfleet cafe car E40155 entity
Predicate serviceOn P18496 FINISHED
Object Amtrak Northeast Corridor routes
Amtrak Northeast Corridor routes are the heavily traveled passenger rail lines connecting major cities from Boston through New York and Philadelphia to Washington, D.C., forming the busiest and most important rail corridor in the United States.
E220792 NE FINISHED

How this triple was built (5 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 Northeast Corridor routes | Statement: [Amfleet cafe car, serviceOn, Amtrak Northeast Corridor routes]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Amtrak Northeast Corridor routes
Context triple: [Amfleet cafe car, serviceOn, Amtrak Northeast Corridor routes]
  • A. Amtrak Northeast Regional
    Amtrak Northeast Regional is a passenger rail service that provides frequent intercity connections between major cities in the northeastern United States, including Boston, New York, Philadelphia, and Washington, D.C.
  • B. Amtrak Empire Corridor
    The Amtrak Empire Corridor is a major passenger rail route in New York State that connects New York City with Albany and other upstate cities along the Hudson River and beyond.
  • C. Northeast Corridor Line (NJ Transit)
    The Northeast Corridor Line (NJ Transit) is a major commuter rail line in New Jersey that runs along Amtrak’s Northeast Corridor, connecting Trenton and New York City with numerous intermediate stops.
  • D. InterCity East Coast
    InterCity East Coast was a British Rail sector brand that operated long-distance high-speed passenger services on the East Coast Main Line before rail privatization.
  • E. Amtrak Maple Leaf
    Amtrak Maple Leaf is an intercity passenger train service operated by Amtrak between New York City and Toronto, Canada, running along the Hudson River and through upstate New York into Ontario.
  • 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 Northeast Corridor routes
Triple: [Amfleet cafe car, serviceOn, Amtrak Northeast Corridor routes]
Generated description
Amtrak Northeast Corridor routes are the heavily traveled passenger rail lines connecting major cities from Boston through New York and Philadelphia to Washington, D.C., forming the busiest and most important rail corridor in the United States.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Amtrak Northeast Corridor routes
Target entity description: Amtrak Northeast Corridor routes are the heavily traveled passenger rail lines connecting major cities from Boston through New York and Philadelphia to Washington, D.C., forming the busiest and most important rail corridor in the United States.
  • A. Amtrak Northeast Regional
    Amtrak Northeast Regional is a passenger rail service that provides frequent intercity connections between major cities in the northeastern United States, including Boston, New York, Philadelphia, and Washington, D.C.
  • B. Amtrak Empire Corridor
    The Amtrak Empire Corridor is a major passenger rail route in New York State that connects New York City with Albany and other upstate cities along the Hudson River and beyond.
  • C. Northeast Corridor Line (NJ Transit)
    The Northeast Corridor Line (NJ Transit) is a major commuter rail line in New Jersey that runs along Amtrak’s Northeast Corridor, connecting Trenton and New York City with numerous intermediate stops.
  • D. InterCity East Coast
    InterCity East Coast was a British Rail sector brand that operated long-distance high-speed passenger services on the East Coast Main Line before rail privatization.
  • E. Amtrak Maple Leaf
    Amtrak Maple Leaf is an intercity passenger train service operated by Amtrak between New York City and Toronto, Canada, running along the Hudson River and through upstate New York into Ontario.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: serviceOn
Context triple: [Amfleet cafe car, serviceOn, Amtrak Northeast Corridor routes]
  • A. serviceWith
    Indicates that one entity provides or is associated with a particular service offered to or used by another entity.
  • B. serviceIn chosen
    Indicates that one entity serves, operates, or performs its function within the context, scope, or domain of another entity.
  • C. serviceOf
    Indicates that one entity performs, provides, or fulfills a function or duty on behalf of another entity.
  • D. service
    Indicates that one entity performs work, assistance, or functions to meet the needs or requests of another entity.
  • E. serviceClass
    Indicates the classification or category of service associated with or provided by an entity in the relationship.
  • F. None of above.

Provenance (6 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_69a8864298748190a2f2fd34f7ef8d77 completed March 4, 2026, 7:21 p.m.
NER Named-entity recognition batch_69abb23459ac819088ded5bfac9d4aad completed March 7, 2026, 5:05 a.m.
NED1 Entity disambiguation (via context triple) batch_69adfbb0be848190a492ed8fa3b600ea completed March 8, 2026, 10:44 p.m.
NEDg Description generation batch_69adfc2b6a0c8190a9129dc0a930d1b1 completed March 8, 2026, 10:46 p.m.
NED2 Entity disambiguation (via description) batch_69adfd3ecb7881909a6692bb58211c2e completed March 8, 2026, 10:50 p.m.
PD Predicate disambiguation batch_69abafed2ab481908920334e77b1021b completed March 7, 2026, 4:56 a.m.
Created at: March 4, 2026, 7:35 p.m.