Triple

T535398
Position Surface form Disambiguated ID Type / Status
Subject SEPTA rapid transit network E12314 entity
Predicate connectsHub P423 FINISHED
Object City Hall Station (Philadelphia)
City Hall Station (Philadelphia) is a major underground transit hub in Center City that serves as a key interchange point for multiple SEPTA subway and trolley lines beneath Philadelphia’s City Hall.
 E69593 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: City Hall Station (Philadelphia) | Statement: [SEPTA rapid transit network, connectsHub, City Hall Station (Philadelphia)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: City Hall Station (Philadelphia)
Context triple: [SEPTA rapid transit network, connectsHub, City Hall Station (Philadelphia)]
  • A. Broad Street Station (Philadelphia)
    Broad Street Station (Philadelphia) was a grand former railroad terminal in Center City Philadelphia that served as the Pennsylvania Railroad’s primary passenger station and a major hub of rail travel in the late 19th and early 20th centuries.
  • B. 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.
  • C. North Philadelphia station
    North Philadelphia station is a transit stop in North Philadelphia, Pennsylvania, serving passengers on SEPTA’s Broad Street Line subway.
  • D. Braddock Road station
    Braddock Road station is a Washington Metro rapid transit station serving the Braddock Road area of Alexandria, Virginia.
  • E. Embarcadero station
    Embarcadero station is a major San Francisco Bay Area Rapid Transit (BART) and Muni Metro hub located at the eastern edge of downtown near the Ferry Building and the Embarcadero waterfront.
  • 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: City Hall Station (Philadelphia)
Triple: [SEPTA rapid transit network, connectsHub, City Hall Station (Philadelphia)]
Generated description
City Hall Station (Philadelphia) is a major underground transit hub in Center City that serves as a key interchange point for multiple SEPTA subway and trolley lines beneath Philadelphia’s City Hall.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: City Hall Station (Philadelphia)
Target entity description: City Hall Station (Philadelphia) is a major underground transit hub in Center City that serves as a key interchange point for multiple SEPTA subway and trolley lines beneath Philadelphia’s City Hall.
  • A. Broad Street Station (Philadelphia)
    Broad Street Station (Philadelphia) was a grand former railroad terminal in Center City Philadelphia that served as the Pennsylvania Railroad’s primary passenger station and a major hub of rail travel in the late 19th and early 20th centuries.
  • B. 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.
  • C. North Philadelphia station
    North Philadelphia station is a transit stop in North Philadelphia, Pennsylvania, serving passengers on SEPTA’s Broad Street Line subway.
  • D. Braddock Road station
    Braddock Road station is a Washington Metro rapid transit station serving the Braddock Road area of Alexandria, Virginia.
  • E. Embarcadero station
    Embarcadero station is a major San Francisco Bay Area Rapid Transit (BART) and Muni Metro hub located at the eastern edge of downtown near the Ferry Building and the Embarcadero waterfront.
  • 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_69a4933208e88190891f5debab1b776d completed March 1, 2026, 7:27 p.m.
NER Named-entity recognition batch_69a49d278cf88190ad1368da91a7014f completed March 1, 2026, 8:10 p.m.
NED1 Entity disambiguation (via context triple) batch_69a4e63063388190bece9d3b8cc027b8 completed March 2, 2026, 1:21 a.m.
NEDg Description generation batch_69a4e6fe6d608190b8b182702399e340 completed March 2, 2026, 1:25 a.m.
NED2 Entity disambiguation (via description) batch_69a4e757a8ec8190b0e4990555855b73 completed March 2, 2026, 1:26 a.m.
Created at: March 1, 2026, 7:32 p.m.