Triple

T5429618
Position Surface form Disambiguated ID Type / Status
Subject 15–16th & Locust station E121449 entity
Predicate connectedTo P37 FINISHED
Object Market–Frankford Line 15th Street station concourse
The Market–Frankford Line 15th Street station concourse is an underground pedestrian passageway in Center City Philadelphia that links the 15th Street subway station with nearby transit facilities and surrounding downtown destinations.
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: Market–Frankford Line 15th Street station concourse | Statement: [15–16th & Locust station, connectedTo, Market–Frankford Line 15th Street station concourse]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Market–Frankford Line 15th Street station concourse
Context triple: [15–16th & Locust station, connectedTo, Market–Frankford Line 15th Street station concourse]
  • A. 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.
  • B. 5th Street/Independence Hall station
    5th Street/Independence Hall station is a subway station in Philadelphia serving the historic Independence Hall and Old City area.
  • C. 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.
  • D. Fairmount station
    Fairmount station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop in Boston’s Hyde Park neighborhood on the Fairmount 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.
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: Market–Frankford Line 15th Street station concourse
Triple: [15–16th & Locust station, connectedTo, Market–Frankford Line 15th Street station concourse]
Generated description
The Market–Frankford Line 15th Street station concourse is an underground pedestrian passageway in Center City Philadelphia that links the 15th Street subway station with nearby transit facilities and surrounding downtown destinations.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Market–Frankford Line 15th Street station concourse
Target entity description: The Market–Frankford Line 15th Street station concourse is an underground pedestrian passageway in Center City Philadelphia that links the 15th Street subway station with nearby transit facilities and surrounding downtown destinations.
  • A. City Hall Station (Philadelphia) chosen
    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.
  • B. 5th Street/Independence Hall station
    5th Street/Independence Hall station is a subway station in Philadelphia serving the historic Independence Hall and Old City area.
  • C. 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.
  • D. Fairmount station
    Fairmount station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop in Boston’s Hyde Park neighborhood on the Fairmount 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.

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_69bd463c65f0819082ee6483ab4b466a completed March 20, 2026, 1:06 p.m.
NER Named-entity recognition batch_69bd883d1bfc8190859bb05cfab065c8 completed March 20, 2026, 5:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf4125e490819088f70090cf8d81fa completed March 22, 2026, 1:08 a.m.
NEDg Description generation batch_69bf453d171081909a0d2b2ac7db13a4 completed March 22, 2026, 1:26 a.m.
NED2 Entity disambiguation (via description) batch_69bf45c75e2c8190a1508e8e90253f88 completed March 22, 2026, 1:28 a.m.
Created at: March 20, 2026, 2:06 p.m.