Triple

T589757
Position Surface form Disambiguated ID Type / Status
Subject Central Subway E17240 entity
Predicate hasStation P35 FINISHED
Object 4th and Brannan station
4th and Brannan station is a San Francisco Muni Metro light rail stop on the Central Subway line located in the city's South of Market (SoMa) district.
 E73821 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: 4th and Brannan station | Statement: [Central Subway, hasStation, 4th and Brannan station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 4th and Brannan station
Context triple: [Central Subway, hasStation, 4th and Brannan station]
  • A. 33rd Street station
    33rd Street station is a major underground trolley stop in Philadelphia serving SEPTA’s Subway–Surface lines near Drexel University and the University of Pennsylvania.
  • B. 15th Street station
    15th Street station is a major underground transit hub in Center City Philadelphia that connects SEPTA’s subway–surface trolleys with the Market–Frankford Line and nearby regional rail services.
  • C. 37th Street station
    37th Street station is a Philadelphia trolley stop on SEPTA’s Subway–Surface Lines serving the University City area near the University of Pennsylvania.
  • D. 36th Street station
    36th Street station is a key SEPTA trolley stop in Philadelphia serving the Subway–Surface Trolley Lines near the University of Pennsylvania.
  • E. Brigham Circle station
    Brigham Circle station is a light rail stop on the MBTA Green Line E branch located in Boston’s Mission Hill neighborhood.
  • 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: 4th and Brannan station
Triple: [Central Subway, hasStation, 4th and Brannan station]
Generated description
4th and Brannan station is a San Francisco Muni Metro light rail stop on the Central Subway line located in the city's South of Market (SoMa) district.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: 4th and Brannan station
Target entity description: 4th and Brannan station is a San Francisco Muni Metro light rail stop on the Central Subway line located in the city's South of Market (SoMa) district.
  • A. 33rd Street station
    33rd Street station is a major underground trolley stop in Philadelphia serving SEPTA’s Subway–Surface lines near Drexel University and the University of Pennsylvania.
  • B. 15th Street station
    15th Street station is a major underground transit hub in Center City Philadelphia that connects SEPTA’s subway–surface trolleys with the Market–Frankford Line and nearby regional rail services.
  • C. 37th Street station
    37th Street station is a Philadelphia trolley stop on SEPTA’s Subway–Surface Lines serving the University City area near the University of Pennsylvania.
  • D. 36th Street station
    36th Street station is a key SEPTA trolley stop in Philadelphia serving the Subway–Surface Trolley Lines near the University of Pennsylvania.
  • E. Brigham Circle station
    Brigham Circle station is a light rail stop on the MBTA Green Line E branch located in Boston’s Mission Hill neighborhood.
  • 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_69a49379d09c8190ac7e00b24e2810b1 completed March 1, 2026, 7:28 p.m.
NER Named-entity recognition batch_69a49bb775fc819085b968f8615dca59 completed March 1, 2026, 8:04 p.m.
NED1 Entity disambiguation (via context triple) batch_69a5103be4b881908fcd20c4c781c0a0 completed March 2, 2026, 4:21 a.m.
NEDg Description generation batch_69a5140f86148190b9f3dd70fa6b0f42 completed March 2, 2026, 4:37 a.m.
NED2 Entity disambiguation (via description) batch_69a5146662488190b2d9024d6d999fa3 completed March 2, 2026, 4:39 a.m.
Created at: March 1, 2026, 7:33 p.m.