Triple
T23113719
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | SEPTA Airport Line |
E576389
|
entity |
| Predicate | usesInfrastructure |
P6820
|
FINISHED |
| Object | Amtrak-owned Northeast Corridor (portion into 30th Street Station) |
—
|
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: Amtrak-owned Northeast Corridor (portion into 30th Street Station) | Statement: [SEPTA Airport Line, usesInfrastructure, Amtrak-owned Northeast Corridor (portion into 30th Street Station)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak-owned Northeast Corridor (portion into 30th Street Station) Context triple: [SEPTA Airport Line, usesInfrastructure, Amtrak-owned Northeast Corridor (portion into 30th Street Station)]
-
A.
Amtrak (station facility)
Amtrak (station facility) is the United States’ national passenger rail service operator that manages and maintains train stations and related passenger facilities across its network.
-
B.
Amtrak Northeast Corridor fare system
The Amtrak Northeast Corridor fare system is the pricing and ticketing structure used for passenger rail services along Amtrak’s busy Northeast Corridor, coordinating fares across various train types and, in some areas, with regional commuter rail operators.
-
C.
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.
-
D.
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.
-
E.
Amtrak tracks at Penn Station
Amtrak tracks at Penn Station are the below-ground rail lines and platforms in Midtown Manhattan that serve Amtrak’s intercity trains and are accessed in part through the adjacent Moynihan Train Hall.
- 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: Amtrak-owned Northeast Corridor (portion into 30th Street Station) Target entity description: The Amtrak-owned Northeast Corridor portion into 30th Street Station is a heavily used segment of the main intercity rail line along the U.S. East Coast that also carries regional and commuter rail services into Philadelphia’s primary rail hub.
-
A.
Amtrak (station facility)
Amtrak (station facility) is the United States’ national passenger rail service operator that manages and maintains train stations and related passenger facilities across its network.
-
B.
Amtrak Northeast Corridor fare system
The Amtrak Northeast Corridor fare system is the pricing and ticketing structure used for passenger rail services along Amtrak’s busy Northeast Corridor, coordinating fares across various train types and, in some areas, with regional commuter rail operators.
-
C.
Amtrak Northeast Corridor routes
chosen
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.
-
D.
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.
-
E.
Amtrak tracks at Penn Station
Amtrak tracks at Penn Station are the below-ground rail lines and platforms in Midtown Manhattan that serve Amtrak’s intercity trains and are accessed in part through the adjacent Moynihan Train Hall.
- F. None of above.
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_69e245f4af548190898d434a64a1e774 |
completed | April 17, 2026, 2:38 p.m. |
| NER | Named-entity recognition | batch_69f18e1121c08190a1d29fe594071c46 |
completed | April 29, 2026, 4:50 a.m. |
Created at: April 17, 2026, 3:59 p.m.