Triple

T16052942
Position Surface form Disambiguated ID Type / Status
Subject Subway–Surface tunnel E389399 entity
Predicate hasRollingStockType P1305 FINISHED
Object SEPTA trolley cars
SEPTA trolley cars are the light rail vehicles used by Philadelphia’s transit authority to provide streetcar and subway–surface trolley service across the city.
E1193002 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 trolley cars | Statement: [Subway–Surface tunnel, hasRollingStockType, SEPTA trolley cars]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: SEPTA trolley cars
Context triple: [Subway–Surface tunnel, hasRollingStockType, SEPTA trolley cars]
  • A. 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.
  • B. SEPTA trackless trolley routes
    SEPTA trackless trolley routes are electric bus lines in Philadelphia that operate using overhead wires instead of diesel engines, providing quieter and lower-emission transit service.
  • C. SEPTA Route 101 trolley
    The SEPTA Route 101 trolley is a suburban light rail line in the Philadelphia area that runs between the 69th Street Transportation Center and Media, Pennsylvania.
  • D. 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.
  • E. SEPTA Subway
    SEPTA Subway is the rapid transit network serving Philadelphia and some surrounding areas, operated by the Southeastern Pennsylvania Transportation Authority and centered on the Broad Street and Market–Frankford lines.
  • 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 trolley cars
Triple: [Subway–Surface tunnel, hasRollingStockType, SEPTA trolley cars]
Generated description
SEPTA trolley cars are the light rail vehicles used by Philadelphia’s transit authority to provide streetcar and subway–surface trolley service across the city.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: SEPTA trolley cars
Target entity description: SEPTA trolley cars are the light rail vehicles used by Philadelphia’s transit authority to provide streetcar and subway–surface trolley service across the city.
  • A. 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.
  • B. SEPTA trackless trolley routes
    SEPTA trackless trolley routes are electric bus lines in Philadelphia that operate using overhead wires instead of diesel engines, providing quieter and lower-emission transit service.
  • C. SEPTA Route 101 trolley
    The SEPTA Route 101 trolley is a suburban light rail line in the Philadelphia area that runs between the 69th Street Transportation Center and Media, Pennsylvania.
  • D. 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.
  • E. SEPTA Subway
    SEPTA Subway is the rapid transit network serving Philadelphia and some surrounding areas, operated by the Southeastern Pennsylvania Transportation Authority and centered on the Broad Street and Market–Frankford lines.
  • 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_69d86dae698881908327ef2d67706cb9 completed April 10, 2026, 3:25 a.m.
NER Named-entity recognition batch_69e1836365688190b182f29bbb66127e completed April 17, 2026, 12:48 a.m.
NED1 Entity disambiguation (via context triple) batch_69ffe478bcc48190bdd4fcb7ec51caad completed May 10, 2026, 1:50 a.m.
NEDg Description generation batch_69ffe6af1c4081908b57f4dc485fbb14 completed May 10, 2026, 2 a.m.
NED2 Entity disambiguation (via description) batch_69ffe769d56081908f723e92d327e315 completed May 10, 2026, 2:03 a.m.
Created at: April 10, 2026, 4:56 a.m.