Triple
T23051425
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak at South Station |
E574023
|
entity |
| Predicate | terminusFor |
P388
|
FINISHED |
| Object | Northeast Regional (Boston terminus) |
—
|
NE NERFINISHED |
How this triple was built (3 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: Northeast Regional (Boston terminus) | Statement: [Amtrak at South Station, terminusFor, Northeast Regional (Boston terminus)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Northeast Regional (Boston terminus) Context triple: [Amtrak at South Station, terminusFor, Northeast Regional (Boston terminus)]
-
A.
Northeast Regional (Philadelphia–New York City segment)
The Northeast Regional (Philadelphia–New York City segment) is an Amtrak intercity rail service that provides frequent, medium-distance passenger trains connecting Philadelphia with New York City along the busy Northeast Corridor.
-
B.
Northeast Corridor
The Northeast Corridor is the busiest passenger rail line in the United States, running primarily Amtrak and commuter trains along the urbanized spine of the East Coast between major cities such as Washington, D.C., Philadelphia, New York City, and Boston.
-
C.
New York–Scranton corridor
The New York–Scranton corridor is a historically significant rail route linking New York City with Scranton, Pennsylvania, that served as a key passenger and freight artery in the northeastern United States.
-
D.
New Hampshire–Boston corridor
The New Hampshire–Boston corridor is a heavily traveled regional route linking communities in New Hampshire with the Greater Boston metropolitan area, serving as a key commuter and intercity travel axis in New England.
-
E.
New England rail network
The New England rail network is the interconnected system of freight and passenger rail lines serving the six New England states, historically built by numerous regional railroads and still vital to the region’s transportation and economy.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Northeast Regional (Boston terminus) Target entity description: The Northeast Regional (Boston terminus) is an Amtrak intercity rail service that operates along the Northeast Corridor, with its Boston-bound trains ending their journey at South Station.
-
A.
Northeast Regional (Philadelphia–New York City segment)
The Northeast Regional (Philadelphia–New York City segment) is an Amtrak intercity rail service that provides frequent, medium-distance passenger trains connecting Philadelphia with New York City along the busy Northeast Corridor.
-
B.
Northeast Corridor
The Northeast Corridor is the busiest passenger rail line in the United States, running primarily Amtrak and commuter trains along the urbanized spine of the East Coast between major cities such as Washington, D.C., Philadelphia, New York City, and Boston.
-
C.
New York–Scranton corridor
The New York–Scranton corridor is a historically significant rail route linking New York City with Scranton, Pennsylvania, that served as a key passenger and freight artery in the northeastern United States.
-
D.
New Hampshire–Boston corridor
The New Hampshire–Boston corridor is a heavily traveled regional route linking communities in New Hampshire with the Greater Boston metropolitan area, serving as a key commuter and intercity travel axis in New England.
-
E.
New England rail network
The New England rail network is the interconnected system of freight and passenger rail lines serving the six New England states, historically built by numerous regional railroads and still vital to the region’s transportation and economy.
- F. None of above. chosen
Provenance (2 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. |
Created at: April 17, 2026, 3:54 p.m.