Triple
T23051426
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak at South Station |
E574023
|
entity |
| Predicate | terminusFor |
P388
|
FINISHED |
| Object |
Acela (Boston terminus)
Acela (Boston terminus) is the Boston endpoint of Amtrak’s high-speed Acela service, located at South Station.
|
E1568517
|
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: Acela (Boston terminus) | Statement: [Amtrak at South Station, terminusFor, Acela (Boston terminus)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Acela (Boston terminus) Context triple: [Amtrak at South Station, terminusFor, Acela (Boston terminus)]
-
A.
Amtrak Providence Station
Amtrak Providence Station is a major intercity and commuter rail hub in downtown Providence, Rhode Island, serving Amtrak’s Northeast Corridor and MBTA commuter rail services.
-
B.
Belmont station
Belmont station is a major Chicago Transit Authority 'L' station on the North Side that serves as a key transfer point between multiple rapid transit lines.
-
C.
Belmont station
Belmont station is a commuter rail stop in Downers Grove, Illinois, served by Metra’s BNSF Railway Line connecting the suburb to downtown Chicago.
-
D.
Jackson Amtrak station
Jackson Amtrak station is a historic passenger rail station in Jackson, Michigan, serving Amtrak trains on the Wolverine line between Chicago and Detroit/Pontiac.
-
E.
Westport station
Westport station is a commuter rail stop on the Metro-North Railroad’s New Haven Line serving passengers in and around Westport, Connecticut.
- 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: Acela (Boston terminus) Triple: [Amtrak at South Station, terminusFor, Acela (Boston terminus)]
Generated description
Acela (Boston terminus) is the Boston endpoint of Amtrak’s high-speed Acela service, located at South Station.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Acela (Boston terminus) Target entity description: Acela (Boston terminus) is the Boston endpoint of Amtrak’s high-speed Acela service, located at South Station.
-
A.
Amtrak Providence Station
Amtrak Providence Station is a major intercity and commuter rail hub in downtown Providence, Rhode Island, serving Amtrak’s Northeast Corridor and MBTA commuter rail services.
-
B.
Belmont station
Belmont station is a major Chicago Transit Authority 'L' station on the North Side that serves as a key transfer point between multiple rapid transit lines.
-
C.
Belmont station
Belmont station is a commuter rail stop in Downers Grove, Illinois, served by Metra’s BNSF Railway Line connecting the suburb to downtown Chicago.
-
D.
Jackson Amtrak station
Jackson Amtrak station is a historic passenger rail station in Jackson, Michigan, serving Amtrak trains on the Wolverine line between Chicago and Detroit/Pontiac.
-
E.
Westport station
Westport station is a commuter rail stop on the Metro-North Railroad’s New Haven Line serving passengers in and around Westport, Connecticut.
- 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_69e245ba7ae48190be606dbc54120e39 |
completed | April 17, 2026, 2:37 p.m. |
| NER | Named-entity recognition | batch_69f1867d010c8190bc5dba6758d0b797 |
completed | April 29, 2026, 4:18 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0c0ae036908190a6cdcb74e0d28f82 |
completed | May 19, 2026, 7:01 a.m. |
| NEDg | Description generation | batch_6a0c0e2dd7908190afa879304ef3ed17 |
completed | May 19, 2026, 7:15 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0c0eaa7f8c81908110341d34d92537 |
completed | May 19, 2026, 7:18 a.m. |
Created at: April 17, 2026, 3:54 p.m.