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)
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.
E220792 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-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.
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-owned Northeast Corridor (portion into 30th Street Station)
Triple: [SEPTA Airport Line, usesInfrastructure, Amtrak-owned Northeast Corridor (portion into 30th Street Station)]
Generated 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.
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 (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_69e245f4af548190898d434a64a1e774 completed April 17, 2026, 2:38 p.m.
NER Named-entity recognition batch_69f18e1121c08190a1d29fe594071c46 completed April 29, 2026, 4:50 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0c23ec62f08190a4dda0d537a7b024 completed May 19, 2026, 8:48 a.m.
NEDg Description generation batch_6a0c271e8a8c8190ba994f557f077288 completed May 19, 2026, 9:02 a.m.
NED2 Entity disambiguation (via description) batch_6a0c27d3befc8190bc7a3697bc0e817b completed May 19, 2026, 9:05 a.m.
Created at: April 17, 2026, 3:59 p.m.