Triple
T5613455
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak services at Chicago Union Station |
E147417
|
entity |
| Predicate | fareSystem |
P395
|
FINISHED |
| Object |
Amtrak national fare system
The Amtrak national fare system is the centralized pricing and ticketing structure that governs fares, discounts, and reservations across Amtrak’s intercity passenger rail network in the United States.
|
E276090
|
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 national fare system | Statement: [Amtrak services at Chicago Union Station, fareSystem, Amtrak national fare system]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak national fare system Context triple: [Amtrak services at Chicago Union Station, fareSystem, Amtrak national fare system]
-
A.
Amtrak reservation system
The Amtrak reservation system is the centralized platform used to search, book, and manage tickets and seat reservations for Amtrak’s passenger rail services across the United States.
-
B.
Amtrak enabling legislation
The Amtrak enabling legislation is the 1970 U.S. federal law that created the National Railroad Passenger Corporation (Amtrak) to preserve and manage intercity passenger rail service.
-
C.
Amtrak Reform and Accountability Act of 1997
The Amtrak Reform and Accountability Act of 1997 is a U.S. federal law that restructured Amtrak’s operations and finances, aiming to improve its efficiency and move it toward greater financial self-sufficiency.
-
D.
Northeast Corridor electrified services
Northeast Corridor electrified services are high-speed, overhead-wire-powered passenger rail operations along the busy Boston–Washington, D.C. corridor, primarily using electric locomotives and electric multiple units rather than bi-level Superliner cars.
-
E.
Amtrak state-supported routes program
The Amtrak state-supported routes program is a funding and operational framework in which U.S. states partner with Amtrak to subsidize and manage shorter-distance intercity passenger rail services beyond the federally supported long-distance network.
- 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 national fare system Triple: [Amtrak services at Chicago Union Station, fareSystem, Amtrak national fare system]
Generated description
The Amtrak national fare system is the centralized pricing and ticketing structure that governs fares, discounts, and reservations across Amtrak’s intercity passenger rail network in the United States.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Amtrak national fare system Target entity description: The Amtrak national fare system is the centralized pricing and ticketing structure that governs fares, discounts, and reservations across Amtrak’s intercity passenger rail network in the United States.
-
A.
Amtrak reservation system
chosen
The Amtrak reservation system is the centralized platform used to search, book, and manage tickets and seat reservations for Amtrak’s passenger rail services across the United States.
-
B.
Amtrak enabling legislation
The Amtrak enabling legislation is the 1970 U.S. federal law that created the National Railroad Passenger Corporation (Amtrak) to preserve and manage intercity passenger rail service.
-
C.
Amtrak Reform and Accountability Act of 1997
The Amtrak Reform and Accountability Act of 1997 is a U.S. federal law that restructured Amtrak’s operations and finances, aiming to improve its efficiency and move it toward greater financial self-sufficiency.
-
D.
Northeast Corridor electrified services
Northeast Corridor electrified services are high-speed, overhead-wire-powered passenger rail operations along the busy Boston–Washington, D.C. corridor, primarily using electric locomotives and electric multiple units rather than bi-level Superliner cars.
-
E.
Amtrak state-supported routes program
The Amtrak state-supported routes program is a funding and operational framework in which U.S. states partner with Amtrak to subsidize and manage shorter-distance intercity passenger rail services beyond the federally supported long-distance network.
- 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_69c00905d4588190bd967842bbcf2219 |
completed | March 22, 2026, 3:21 p.m. |
| NER | Named-entity recognition | batch_69c021226cf88190b70b4b51eb5b4144 |
completed | March 22, 2026, 5:04 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c0287b14708190bc246e982896ad27 |
completed | March 22, 2026, 5:35 p.m. |
| NEDg | Description generation | batch_69c03f8c1a3081908f9d03a6c51d69f0 |
completed | March 22, 2026, 7:14 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69c0404f0a3081908850794f9a5cea40 |
completed | March 22, 2026, 7:17 p.m. |
Created at: March 22, 2026, 3:39 p.m.