Triple

T3998987
Position Surface form Disambiguated ID Type / Status
Subject Richmond–Millbrae line E87165 entity
Predicate rollingStock P1305 FINISHED
Object BART E series cars
BART E series cars are a modern generation of Bay Area Rapid Transit rail vehicles designed with updated interiors, improved energy efficiency, and enhanced passenger comfort and accessibility.
E12820 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 E series cars | Statement: [Richmond–Millbrae line, rollingStock, BART E series cars]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: BART E series cars
Context triple: [Richmond–Millbrae line, rollingStock, BART E series cars]
  • A. Mark VI monorail trains
    Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
  • B. CTA 5000-series railcars
    The CTA 5000-series railcars are a modern generation of Chicago "L" rapid transit cars featuring improved accessibility, digital signage, and enhanced passenger comfort and safety systems.
  • C. BART
    BART (Bay Area Rapid Transit) is a major rapid transit system serving the San Francisco Bay Area, linking cities like San Francisco, Oakland, and Berkeley with surrounding suburbs and regional transit networks.
  • D. Mark IV monorail trains
    Mark IV monorail trains were an earlier generation of Walt Disney World’s monorail fleet, known for their classic design and service before being superseded by the Mark VI models.
  • E. San Francisco Muni historic streetcars
    San Francisco Muni historic streetcars are a fleet of restored vintage streetcars from around the world that operate as regular public transit along San Francisco’s F-Market & Wharves and E-Embarcadero lines.
  • 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 E series cars
Triple: [Richmond–Millbrae line, rollingStock, BART E series cars]
Generated description
BART E series cars are a modern generation of Bay Area Rapid Transit rail vehicles designed with updated interiors, improved energy efficiency, and enhanced passenger comfort and accessibility.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: BART E series cars
Target entity description: BART E series cars are a modern generation of Bay Area Rapid Transit rail vehicles designed with updated interiors, improved energy efficiency, and enhanced passenger comfort and accessibility.
  • A. Mark VI monorail trains
    Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
  • B. CTA 5000-series railcars
    The CTA 5000-series railcars are a modern generation of Chicago "L" rapid transit cars featuring improved accessibility, digital signage, and enhanced passenger comfort and safety systems.
  • C. BART chosen
    BART (Bay Area Rapid Transit) is a major rapid transit system serving the San Francisco Bay Area, linking cities like San Francisco, Oakland, and Berkeley with surrounding suburbs and regional transit networks.
  • D. Mark IV monorail trains
    Mark IV monorail trains were an earlier generation of Walt Disney World’s monorail fleet, known for their classic design and service before being superseded by the Mark VI models.
  • E. San Francisco Muni historic streetcars
    San Francisco Muni historic streetcars are a fleet of restored vintage streetcars from around the world that operate as regular public transit along San Francisco’s F-Market & Wharves and E-Embarcadero lines.
  • 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_69aed94118148190975e6aa4e554cde9 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aefa4065ac8190a898a1025365b8e9 completed March 9, 2026, 4:50 p.m.
NED1 Entity disambiguation (via context triple) batch_69b56b4447e08190aa90dd50f304a491 completed March 14, 2026, 2:05 p.m.
NEDg Description generation batch_69b56bdcfa94819096df212e6e99937e completed March 14, 2026, 2:08 p.m.
NED2 Entity disambiguation (via description) batch_69b56c5e73e88190896176180a9e58cd completed March 14, 2026, 2:10 p.m.
Created at: March 9, 2026, 3:34 p.m.