Triple

T472007
Position Surface form Disambiguated ID Type / Status
Subject SEPTA Broad Street Line E8578 entity
Predicate operator P179 FINISHED
Object SEPTA
SEPTA is the regional public transportation authority serving Philadelphia and its surrounding counties, operating buses, subways, trolleys, and commuter rail services.
 E59500 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 | Statement: [SEPTA Broad Street Line, operator, SEPTA]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: SEPTA
Context triple: [SEPTA Broad Street Line, operator, SEPTA]
  • A. SEPTA City Transit Division
    The SEPTA City Transit Division is the branch of Philadelphia’s regional transit authority that operates the city’s buses, trolleys, and subway–elevated lines.
  • B. SEPTA Suburban Transit Division
    The SEPTA Suburban Transit Division is the part of Philadelphia’s regional transit system that operates bus, trolley, and other public transportation services in the suburban areas surrounding the city.
  • C. 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.
  • D. SEPTA Board
    The SEPTA Board is the policy-making and oversight body that directs and supervises the operations, budget, and strategic decisions of the Southeastern Pennsylvania Transportation Authority.
  • E. SEPTA rapid transit network
    The SEPTA rapid transit network is the system of high-capacity urban rail lines serving Philadelphia and some surrounding suburbs, operated by the Southeastern Pennsylvania Transportation Authority.
  • 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
Triple: [SEPTA Broad Street Line, operator, SEPTA]
Generated description
SEPTA is the regional public transportation authority serving Philadelphia and its surrounding counties, operating buses, subways, trolleys, and commuter rail services.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: SEPTA
Target entity description: SEPTA is the regional public transportation authority serving Philadelphia and its surrounding counties, operating buses, subways, trolleys, and commuter rail services.
  • A. SEPTA City Transit Division
    The SEPTA City Transit Division is the branch of Philadelphia’s regional transit authority that operates the city’s buses, trolleys, and subway–elevated lines.
  • B. SEPTA Suburban Transit Division
    The SEPTA Suburban Transit Division is the part of Philadelphia’s regional transit system that operates bus, trolley, and other public transportation services in the suburban areas surrounding the city.
  • C. 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.
  • D. SEPTA Board
    The SEPTA Board is the policy-making and oversight body that directs and supervises the operations, budget, and strategic decisions of the Southeastern Pennsylvania Transportation Authority.
  • E. SEPTA rapid transit network
    The SEPTA rapid transit network is the system of high-capacity urban rail lines serving Philadelphia and some surrounding suburbs, operated by the Southeastern Pennsylvania Transportation Authority.
  • 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_69a2e7f3aeb48190a19453e3a043f486 completed Feb. 28, 2026, 1:04 p.m.
NER Named-entity recognition batch_69a2eff24108819092fdb85019ec4089 completed Feb. 28, 2026, 1:38 p.m.
NED1 Entity disambiguation (via context triple) batch_69a467ff6db08190837d5f0cfa2946e9 completed March 1, 2026, 4:23 p.m.
NEDg Description generation batch_69a4688a2cbc8190a2110fcd32b63f19 completed March 1, 2026, 4:25 p.m.
NED2 Entity disambiguation (via description) batch_69a468dfc120819098e9f66c8193a20f completed March 1, 2026, 4:27 p.m.
Created at: Feb. 28, 2026, 1:12 p.m.