Triple

T3503108
Position Surface form Disambiguated ID Type / Status
Subject Muni Metro Market Street lines E74013 entity
Predicate hasStation P35 FINISHED
Object Castro Street station
Castro Street station is an underground Muni Metro light rail stop in San Francisco’s Castro District, serving as a key transit point along Market Street.
 E371884 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: Castro Street station | Statement: [Muni Metro Market Street lines, hasStation, Castro Street station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Castro Street station
Context triple: [Muni Metro Market Street lines, hasStation, Castro Street station]
  • A. Heath Street station
    Heath Street station is the southern terminus of the MBTA Green Line E branch, serving Boston’s Mission Hill neighborhood with light rail service.
  • B. Taft Avenue station
    Taft Avenue station is a major elevated terminal station of Manila's MRT Line 3, serving as a key transit hub connecting the EDSA corridor with nearby LRT and bus routes.
  • C. Cahill Street station
    Cahill Street station is the former name of San Jose Diridon Station, a major rail hub in San Jose, California.
  • D. 2nd Street station
    2nd Street station is a subway station in Philadelphia serving the Old City neighborhood on SEPTA’s Market–Frankford Line.
  • E. 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.
  • 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: Castro Street station
Triple: [Muni Metro Market Street lines, hasStation, Castro Street station]
Generated description
Castro Street station is an underground Muni Metro light rail stop in San Francisco’s Castro District, serving as a key transit point along Market Street.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Castro Street station
Target entity description: Castro Street station is an underground Muni Metro light rail stop in San Francisco’s Castro District, serving as a key transit point along Market Street.
  • A. Heath Street station
    Heath Street station is the southern terminus of the MBTA Green Line E branch, serving Boston’s Mission Hill neighborhood with light rail service.
  • B. Taft Avenue station
    Taft Avenue station is a major elevated terminal station of Manila's MRT Line 3, serving as a key transit hub connecting the EDSA corridor with nearby LRT and bus routes.
  • C. Cahill Street station
    Cahill Street station is the former name of San Jose Diridon Station, a major rail hub in San Jose, California.
  • D. 2nd Street station
    2nd Street station is a subway station in Philadelphia serving the Old City neighborhood on SEPTA’s Market–Frankford Line.
  • E. 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.
  • 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_69ad85ce7a9c81909ddc5cf0cb67a6e3 completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adbbf0c2b48190b49923137bb9e45d completed March 8, 2026, 6:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69b402d3a06481908e512c09306a2566 completed March 13, 2026, 12:28 p.m.
NEDg Description generation batch_69b4069ce1e48190a1c0aa9de973d49f completed March 13, 2026, 12:44 p.m.
NED2 Entity disambiguation (via description) batch_69b40aa1678081909b2131a561b2e4ab completed March 13, 2026, 1:01 p.m.
Created at: March 8, 2026, 3:18 p.m.