Triple
T3022799
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Keystone Service (select trains) |
E82501
|
entity |
| Predicate | ticketing |
P395
|
FINISHED |
| Object | Amtrak national reservation system |
E276090
|
NE FINISHED |
How this triple was built (2 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 reservation system | Statement: [Keystone Service (select trains), ticketing, Amtrak national reservation system]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak national reservation system Context triple: [Keystone Service (select trains), ticketing, Amtrak national reservation system]
-
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
Amtrak is the United States’ national passenger railroad service, operating intercity and long-distance trains across much of the country.
-
C.
Amtrak Guest Rewards loyalty program
Amtrak Guest Rewards is Amtrak’s loyalty program that allows passengers to earn and redeem points for train travel, upgrades, and other travel-related rewards.
-
D.
Amtrak Vermonter
Amtrak Vermonter is a daily intercity passenger train operated by Amtrak that runs between Washington, D.C., and St. Albans, Vermont, serving major cities along the Northeast Corridor and into northern New England.
-
E.
U.S. intercity passenger rail network
The U.S. intercity passenger rail network is a nationwide system of medium- and long-distance train routes, primarily operated by Amtrak, that connects major cities and regions across the United States.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ad8b1fb34081908c1b873e2b7273e1 |
completed | March 8, 2026, 2:43 p.m. |
| NER | Named-entity recognition | batch_69ad9a963034819093d96566e9b0cea9 |
completed | March 8, 2026, 3:49 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b1deafdcb881908174331d5bfc6349 |
completed | March 11, 2026, 9:29 p.m. |
Created at: March 8, 2026, 3 p.m.