Triple

T21894
Position Surface form Disambiguated ID Type / Status
Subject Pennsylvania Railroad Company E435 entity
Predicate operatedLine P848 FINISHED
Object Main Line (Philadelphia to Pittsburgh)
Main Line (Philadelphia to Pittsburgh) was a major east–west rail corridor across Pennsylvania that formed the core route linking Philadelphia and Pittsburgh and became central to the state’s transportation and economic development.
E8353 NE FINISHED

How this triple was built (5 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: Main Line (Philadelphia to Pittsburgh) | Statement: [Pennsylvania Railroad Company, operatedLine, Main Line (Philadelphia to Pittsburgh)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Main Line (Philadelphia to Pittsburgh)
Context triple: [Pennsylvania Railroad Company, operatedLine, Main Line (Philadelphia to Pittsburgh)]
  • A. Pittsburgh–Chicago route
    The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
  • B. SEPTA Market–Frankford Line
    The SEPTA Market–Frankford Line is a major rapid transit route in Philadelphia that runs east–west across the city, connecting key neighborhoods and commercial districts.
  • C. 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.
  • 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. Schuylkill River Trail
    The Schuylkill River Trail is a popular multi-use recreational path in southeastern Pennsylvania that follows the Schuylkill River, offering scenic routes for walking, running, and cycling through urban and natural landscapes.
  • 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: Main Line (Philadelphia to Pittsburgh)
Triple: [Pennsylvania Railroad Company, operatedLine, Main Line (Philadelphia to Pittsburgh)]
Generated description
Main Line (Philadelphia to Pittsburgh) was a major east–west rail corridor across Pennsylvania that formed the core route linking Philadelphia and Pittsburgh and became central to the state’s transportation and economic development.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Main Line (Philadelphia to Pittsburgh)
Target entity description: Main Line (Philadelphia to Pittsburgh) was a major east–west rail corridor across Pennsylvania that formed the core route linking Philadelphia and Pittsburgh and became central to the state’s transportation and economic development.
  • A. Pittsburgh–Chicago route
    The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
  • B. SEPTA Market–Frankford Line
    The SEPTA Market–Frankford Line is a major rapid transit route in Philadelphia that runs east–west across the city, connecting key neighborhoods and commercial districts.
  • C. 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.
  • 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. Schuylkill River Trail
    The Schuylkill River Trail is a popular multi-use recreational path in southeastern Pennsylvania that follows the Schuylkill River, offering scenic routes for walking, running, and cycling through urban and natural landscapes.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: operatedLine
Context triple: [Pennsylvania Railroad Company, operatedLine, Main Line (Philadelphia to Pittsburgh)]
  • A. railwayLine chosen
    Indicates that there is a railway line connection or route associated with or passing through the referenced entity.
  • B. operatesBy
    Indicates that an entity performs its function, action, or process through the use or application of another entity (e.g., a method, mechanism, or principle).
  • C. servedByLine
    Indicates that a transportation stop, station, or location is provided service by a specific transit line.
  • D. hasRailSystem
    Indicates that an entity possesses or is served by a rail-based transportation system.
  • E. servedByRailroad
    Indicates that a location or facility is provided with transportation or service by a railroad line or company.
  • F. None of above.

Provenance (6 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_69a243b4ac2c8190b93c303df797b7b2 completed Feb. 28, 2026, 1:24 a.m.
NER Named-entity recognition batch_69a246e94ca881908f7a7d2c0b293033 completed Feb. 28, 2026, 1:37 a.m.
NED1 Entity disambiguation (via context triple) batch_69a26237c7208190ac4a1c373ff37b06 completed Feb. 28, 2026, 3:34 a.m.
NEDg Description generation batch_69a263abaac0819095a41ae87f45b132 completed Feb. 28, 2026, 3:40 a.m.
NED2 Entity disambiguation (via description) batch_69a264296fa88190a7b4c0d3f164b02f completed Feb. 28, 2026, 3:42 a.m.
PD Predicate disambiguation batch_69a24654724481909ba14b7f68d2a472 completed Feb. 28, 2026, 1:35 a.m.
Created at: Feb. 28, 2026, 1:34 a.m.