Triple

T13167837
Position Surface form Disambiguated ID Type / Status
Subject Penn Square station E312899 entity
Predicate formerNameOf P65 FINISHED
Object City Hall station (SEPTA Broad Street Line)
City Hall station (SEPTA Broad Street Line) is a major underground subway station located beneath Philadelphia’s City Hall, serving as a central hub on SEPTA’s Broad Street Line.
 E1025423 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 (SEPTA Broad Street Line) | Statement: [Penn Square station, formerNameOf, City Hall station (SEPTA Broad Street Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: City Hall station (SEPTA Broad Street Line)
Context triple: [Penn Square station, formerNameOf, City Hall station (SEPTA Broad Street Line)]
  • A. SEPTA 34th Street Station (Market–Frankford Line)
    SEPTA 34th Street Station (Market–Frankford Line) is an elevated rapid transit station in West Philadelphia serving the Market–Frankford Line, providing access to nearby University City institutions and surrounding neighborhoods.
  • B. Fairmount station (Broad Street Line)
    Fairmount station (Broad Street Line) is an underground rapid transit station on SEPTA's Broad Street Line in Philadelphia, Pennsylvania.
  • C. Erie station (Broad Street Line)
    Erie station (Broad Street Line) is a rapid transit station on SEPTA's Broad Street Line in Philadelphia, Pennsylvania.
  • D. Allegheny station (Broad Street Line)
    Allegheny station (Broad Street Line) is a rapid transit station on SEPTA’s Broad Street Line in Philadelphia, serving the surrounding North Philadelphia neighborhood.
  • E. Girard station (Broad Street Line)
    Girard station (Broad Street Line) is an underground rapid transit station in Philadelphia, Pennsylvania, located along SEPTA’s Broad Street Line near the intersection of Girard Avenue and Broad Street.
  • 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 (SEPTA Broad Street Line)
Triple: [Penn Square station, formerNameOf, City Hall station (SEPTA Broad Street Line)]
Generated description
City Hall station (SEPTA Broad Street Line) is a major underground subway station located beneath Philadelphia’s City Hall, serving as a central hub on SEPTA’s Broad Street Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: City Hall station (SEPTA Broad Street Line)
Target entity description: City Hall station (SEPTA Broad Street Line) is a major underground subway station located beneath Philadelphia’s City Hall, serving as a central hub on SEPTA’s Broad Street Line.
  • A. SEPTA 34th Street Station (Market–Frankford Line)
    SEPTA 34th Street Station (Market–Frankford Line) is an elevated rapid transit station in West Philadelphia serving the Market–Frankford Line, providing access to nearby University City institutions and surrounding neighborhoods.
  • B. Fairmount station (Broad Street Line)
    Fairmount station (Broad Street Line) is an underground rapid transit station on SEPTA's Broad Street Line in Philadelphia, Pennsylvania.
  • C. Erie station (Broad Street Line)
    Erie station (Broad Street Line) is a rapid transit station on SEPTA's Broad Street Line in Philadelphia, Pennsylvania.
  • D. Allegheny station (Broad Street Line)
    Allegheny station (Broad Street Line) is a rapid transit station on SEPTA’s Broad Street Line in Philadelphia, serving the surrounding North Philadelphia neighborhood.
  • E. Girard station (Broad Street Line)
    Girard station (Broad Street Line) is an underground rapid transit station in Philadelphia, Pennsylvania, located along SEPTA’s Broad Street Line near the intersection of Girard Avenue and Broad Street.
  • 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_69d806ac3ee081909b2fd27d060aa974 completed April 9, 2026, 8:06 p.m.
NER Named-entity recognition batch_69d98c2c317881908cc715c97d915f77 completed April 10, 2026, 11:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69f6eaf92c1881909d387dcf50d8d09f completed May 3, 2026, 6:28 a.m.
NEDg Description generation batch_69f6f11b77a081909ea2ddedbac5abb8 completed May 3, 2026, 6:54 a.m.
NED2 Entity disambiguation (via description) batch_69f6f1b5c67c8190a2216ef32c5420c9 completed May 3, 2026, 6:56 a.m.
Created at: April 9, 2026, 9:13 p.m.