Triple

T17403279
Position Surface form Disambiguated ID Type / Status
Subject BART Fremont line E423149 entity
Predicate partOf P40 FINISHED
Object BART Fremont–Daly City service
The BART Fremont–Daly City service is a Bay Area Rapid Transit route that connects the East Bay city of Fremont with Daly City via Oakland and San Francisco.
 E423149 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: BART Fremont–Daly City service | Statement: [BART Fremont line, partOf, BART Fremont–Daly City service]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: BART Fremont–Daly City service
Context triple: [BART Fremont line, partOf, BART Fremont–Daly City service]
  • A. BART Fremont line
    The BART Fremont line is a Bay Area Rapid Transit route in the San Francisco Bay Area that historically extended service to the city of Fremont in southern Alameda County.
  • B. BART Antioch–SFO+Millbrae line
    The BART Antioch–SFO+Millbrae line is a Bay Area Rapid Transit service that runs between Antioch in the East Bay and San Francisco International Airport and Millbrae, connecting suburban communities with major regional transit hubs.
  • C. BART Richmond–Millbrae+SFO line
    The BART Richmond–Millbrae+SFO line is a Bay Area Rapid Transit route that runs from Richmond in the East Bay through Oakland and San Francisco to Millbrae and San Francisco International Airport.
  • D. BART Blue Line
    The BART Blue Line is a Bay Area Rapid Transit service route that runs through San Francisco and the greater Bay Area, connecting key urban centers and regional destinations.
  • E. BART Green Line
    The BART Green Line is a Bay Area Rapid Transit service route that operates trains through the South Bay, including stops such as Berryessa/North San José station.
  • 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: BART Fremont–Daly City service
Triple: [BART Fremont line, partOf, BART Fremont–Daly City service]
Generated description
The BART Fremont–Daly City service is a Bay Area Rapid Transit route that connects the East Bay city of Fremont with Daly City via Oakland and San Francisco.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: BART Fremont–Daly City service
Target entity description: The BART Fremont–Daly City service is a Bay Area Rapid Transit route that connects the East Bay city of Fremont with Daly City via Oakland and San Francisco.
  • A. BART Fremont line chosen
    The BART Fremont line is a Bay Area Rapid Transit route in the San Francisco Bay Area that historically extended service to the city of Fremont in southern Alameda County.
  • B. BART Antioch–SFO+Millbrae line
    The BART Antioch–SFO+Millbrae line is a Bay Area Rapid Transit service that runs between Antioch in the East Bay and San Francisco International Airport and Millbrae, connecting suburban communities with major regional transit hubs.
  • C. BART Richmond–Millbrae+SFO line
    The BART Richmond–Millbrae+SFO line is a Bay Area Rapid Transit route that runs from Richmond in the East Bay through Oakland and San Francisco to Millbrae and San Francisco International Airport.
  • D. BART Blue Line
    The BART Blue Line is a Bay Area Rapid Transit service route that runs through San Francisco and the greater Bay Area, connecting key urban centers and regional destinations.
  • E. BART Green Line
    The BART Green Line is a Bay Area Rapid Transit service route that operates trains through the South Bay, including stops such as Berryessa/North San José station.
  • 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_69d889d7d27c819088486ce3f0627fa1 completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e43b051cc48190872278ee0b52240d completed April 19, 2026, 2:16 a.m.
NED1 Entity disambiguation (via context triple) batch_6a01c92d240c8190a8cefa238e8c3fb9 completed May 11, 2026, 12:18 p.m.
NEDg Description generation batch_6a01ca1968ec819080b6f9b8722b0fb2 completed May 11, 2026, 12:22 p.m.
NED2 Entity disambiguation (via description) batch_6a01ca70502c8190bfa2dfd44c30a6f2 completed May 11, 2026, 12:24 p.m.
Created at: April 10, 2026, 5:45 a.m.