Triple

T4224
Position Surface form Disambiguated ID Type / Status
Subject University City, Philadelphia E81 entity
Predicate servedByTransit P82 FINISHED
Object SEPTA Regional Rail
SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
E2901 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: SEPTA Regional Rail | Statement: [University City, Philadelphia, servedByTransit, SEPTA Regional Rail]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: SEPTA Regional Rail
Context triple: [University City, Philadelphia, servedByTransit, SEPTA Regional Rail]
  • A. 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.
  • B. SEPTA Subway–Surface Trolley Lines
    The SEPTA Subway–Surface Trolley Lines are a network of light rail routes in Philadelphia that operate partly in subway tunnels and partly on city streets, connecting Center City with West Philadelphia and surrounding neighborhoods.
  • C. 30th Street Station
    30th Street Station is a major intercity and regional rail hub in Philadelphia, serving Amtrak, SEPTA, and NJ Transit and connecting the city to destinations across the Northeast and beyond.
  • D. Virginia Railway Express
    Virginia Railway Express is a commuter rail service that connects Northern Virginia suburbs with Washington, D.C., primarily serving daily work commuters.
  • E. MBTA Red Line
    The MBTA Red Line is a major rapid transit line in the Boston metropolitan area that runs through key communities including Cambridge, connecting them to downtown Boston and other parts of the region.
  • 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: SEPTA Regional Rail
Triple: [University City, Philadelphia, servedByTransit, SEPTA Regional Rail]
Generated description
SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: SEPTA Regional Rail
Target entity description: SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
  • A. 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.
  • B. SEPTA Subway–Surface Trolley Lines
    The SEPTA Subway–Surface Trolley Lines are a network of light rail routes in Philadelphia that operate partly in subway tunnels and partly on city streets, connecting Center City with West Philadelphia and surrounding neighborhoods.
  • C. 30th Street Station
    30th Street Station is a major intercity and regional rail hub in Philadelphia, serving Amtrak, SEPTA, and NJ Transit and connecting the city to destinations across the Northeast and beyond.
  • D. Virginia Railway Express
    Virginia Railway Express is a commuter rail service that connects Northern Virginia suburbs with Washington, D.C., primarily serving daily work commuters.
  • E. MBTA Red Line
    The MBTA Red Line is a major rapid transit line in the Boston metropolitan area that runs through key communities including Cambridge, connecting them to downtown Boston and other parts of the region.
  • 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_69a238d6b47881909e68288aed2fd858 completed Feb. 28, 2026, 12:37 a.m.
NER Named-entity recognition batch_69a2399c646c8190b4977ed56b8835a8 completed Feb. 28, 2026, 12:41 a.m.
NED1 Entity disambiguation (via context triple) batch_69a24e51246c819098f53258d869ecde completed Feb. 28, 2026, 2:09 a.m.
NEDg Description generation batch_69a250b213c881909381abc66f5ebe68 completed Feb. 28, 2026, 2:19 a.m.
NED2 Entity disambiguation (via description) batch_69a2515b915c8190b122de0025bd954f completed Feb. 28, 2026, 2:22 a.m.
Created at: Feb. 28, 2026, 12:40 a.m.