Triple

T297956
Position Surface form Disambiguated ID Type / Status
Subject F Market & Wharves E6133 entity
Predicate operatesOn P23 FINISHED
Object Market Street surface tracks
Market Street surface tracks are the street-level light rail tracks along San Francisco’s Market Street used by historic streetcars and other Muni rail services.
E38242 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 Street surface tracks | Statement: [F Market & Wharves, operatesOn, Market Street surface tracks]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Market Street surface tracks
Context triple: [F Market & Wharves, operatesOn, Market Street surface tracks]
  • A. California Street line
    The California Street line is one of San Francisco’s historic cable car routes, running east–west across the city’s California Street and offering classic views of its steep hills and downtown skyline.
  • B. Market Street retail area
    Market Street retail area is a major pedestrianized shopping thoroughfare in Manchester city centre, known for its high street stores and heavy footfall.
  • C. Market Street
    Market Street is a major east–west thoroughfare in Philadelphia known for its commercial activity, transit connections, and role as a central artery of the city.
  • D. Portland Streetcar
    Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
  • E. Valley Lines
    Valley Lines is a suburban rail network serving Cardiff and the surrounding South Wales Valleys.
  • 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 Street surface tracks
Triple: [F Market & Wharves, operatesOn, Market Street surface tracks]
Generated description
Market Street surface tracks are the street-level light rail tracks along San Francisco’s Market Street used by historic streetcars and other Muni rail services.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Market Street surface tracks
Target entity description: Market Street surface tracks are the street-level light rail tracks along San Francisco’s Market Street used by historic streetcars and other Muni rail services.
  • A. California Street line
    The California Street line is one of San Francisco’s historic cable car routes, running east–west across the city’s California Street and offering classic views of its steep hills and downtown skyline.
  • B. Market Street retail area
    Market Street retail area is a major pedestrianized shopping thoroughfare in Manchester city centre, known for its high street stores and heavy footfall.
  • C. Market Street
    Market Street is a major east–west thoroughfare in Philadelphia known for its commercial activity, transit connections, and role as a central artery of the city.
  • D. Portland Streetcar
    Portland Streetcar is a modern urban streetcar transit system serving central Portland, Oregon, connecting key neighborhoods, employment centers, and educational institutions.
  • E. Valley Lines
    Valley Lines is a suburban rail network serving Cardiff and the surrounding South Wales Valleys.
  • 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_69a2e79114b081909490b3bf5a5dbb51 completed Feb. 28, 2026, 1:03 p.m.
NER Named-entity recognition batch_69a2e9e3acc08190a35746f2de7e30f0 completed Feb. 28, 2026, 1:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69a3a88a27648190a691c62f0361fd90 completed March 1, 2026, 2:46 a.m.
NEDg Description generation batch_69a3a90299888190b7f88d6411531823 completed March 1, 2026, 2:48 a.m.
NED2 Entity disambiguation (via description) batch_69a3a96e4ff08190982e2e92a7c529a5 completed March 1, 2026, 2:50 a.m.
Created at: Feb. 28, 2026, 1:06 p.m.