Triple

T5429615
Position Surface form Disambiguated ID Type / Status
Subject 15–16th & Locust station E121449 entity
Predicate connectedTo P37 FINISHED
Object Broad Street Line Walnut–Locust station
Broad Street Line Walnut–Locust station is an underground SEPTA subway station in Center City Philadelphia serving the Broad Street Line near the city’s theater and cultural district.
 E519553 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Broad Street Line Walnut–Locust station | Statement: [15–16th & Locust station, connectedTo, Broad Street Line Walnut–Locust station]

Disambiguation candidates (2 decisions)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Broad Street Line Walnut–Locust station
Context triple: [15–16th & Locust station, connectedTo, Broad Street Line Walnut–Locust station]
  • 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. Wynnefield Avenue station
    Wynnefield Avenue station is a regional rail stop in Philadelphia, Pennsylvania, served by SEPTA’s Cynwyd Line.
  • C. Broad Street station (Newark Light Rail)
    Broad Street station is a Newark Light Rail stop in Newark, New Jersey, serving as a key connection point between the light rail system and NJ Transit's Broad Street commuter rail station.
  • D. Walnut Street station
    Walnut Street station is a New Jersey Transit commuter rail stop in Montclair, New Jersey, serving passengers on the Montclair-Boonton Line.
  • 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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Broad Street Line Walnut–Locust station
Target entity description: Broad Street Line Walnut–Locust station is an underground SEPTA subway station in Center City Philadelphia serving the Broad Street Line near the city’s theater and cultural district.
  • 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. Wynnefield Avenue station
    Wynnefield Avenue station is a regional rail stop in Philadelphia, Pennsylvania, served by SEPTA’s Cynwyd Line.
  • C. Broad Street station (Newark Light Rail)
    Broad Street station is a Newark Light Rail stop in Newark, New Jersey, serving as a key connection point between the light rail system and NJ Transit's Broad Street commuter rail station.
  • D. Walnut Street station
    Walnut Street station is a New Jersey Transit commuter rail stop in Montclair, New Jersey, serving passengers on the Montclair-Boonton Line.
  • 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

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Broad Street Line Walnut–Locust station
Triple: [15–16th & Locust station, connectedTo, Broad Street Line Walnut–Locust station]
Generated description
Broad Street Line Walnut–Locust station is an underground SEPTA subway station in Center City Philadelphia serving the Broad Street Line near the city’s theater and cultural district.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69bd463c65f0819082ee6483ab4b466a elicitation completed
NER batch_69bd883d1bfc8190859bb05cfab065c8 ner completed
NED1 batch_69bf3ac6285081909afa6e91a023f6d5 ned_source_triple completed
NED2 batch_69bf3ce7d6388190a9cd22f76f4420e0 ned_description completed
NEDg batch_69bf3c43ffe88190b8d2a10ea8a9a455 nedg completed
Created at: March 20, 2026, 2:06 p.m.