Triple

T3899822
Position Surface form Disambiguated ID Type / Status
Subject Dublin/Pleasanton–Daly City line E90457 entity
Predicate hasStation P35 FINISHED
Object West Oakland station
West Oakland station is a Bay Area Rapid Transit (BART) station in Oakland, California, serving as a key stop near the eastern approach to the San Francisco–Oakland Bay Bridge.
 E423150 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: West Oakland station | Statement: [Dublin/Pleasanton–Daly City line, hasStation, West Oakland station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: West Oakland station
Context triple: [Dublin/Pleasanton–Daly City line, hasStation, West Oakland station]
  • A. Oakland International Airport station
    Oakland International Airport station is a Bay Area Rapid Transit (BART) rail station that provides direct transit service between Oakland International Airport and the broader San Francisco Bay Area.
  • B. 19th Street Oakland station
    19th Street Oakland station is a major Bay Area Rapid Transit (BART) underground station serving central Oakland, California.
  • C. Downtown Berkeley station
    Downtown Berkeley station is a major underground Bay Area Rapid Transit (BART) stop serving the commercial core and university area of Berkeley, California.
  • D. Emeryville station
    Emeryville station is a major Amtrak rail terminal in Emeryville, California, serving as the primary San Francisco–area hub and western terminus for long-distance routes like the California Zephyr.
  • E. North Berkeley station
    North Berkeley station is a Bay Area Rapid Transit (BART) station in Berkeley, California, serving as a local transit hub on the system’s Richmond line.
  • 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: West Oakland station
Triple: [Dublin/Pleasanton–Daly City line, hasStation, West Oakland station]
Generated description
West Oakland station is a Bay Area Rapid Transit (BART) station in Oakland, California, serving as a key stop near the eastern approach to the San Francisco–Oakland Bay Bridge.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: West Oakland station
Target entity description: West Oakland station is a Bay Area Rapid Transit (BART) station in Oakland, California, serving as a key stop near the eastern approach to the San Francisco–Oakland Bay Bridge.
  • A. Oakland International Airport station
    Oakland International Airport station is a Bay Area Rapid Transit (BART) rail station that provides direct transit service between Oakland International Airport and the broader San Francisco Bay Area.
  • B. 19th Street Oakland station
    19th Street Oakland station is a major Bay Area Rapid Transit (BART) underground station serving central Oakland, California.
  • C. Downtown Berkeley station
    Downtown Berkeley station is a major underground Bay Area Rapid Transit (BART) stop serving the commercial core and university area of Berkeley, California.
  • D. Emeryville station
    Emeryville station is a major Amtrak rail terminal in Emeryville, California, serving as the primary San Francisco–area hub and western terminus for long-distance routes like the California Zephyr.
  • E. North Berkeley station
    North Berkeley station is a Bay Area Rapid Transit (BART) station in Berkeley, California, serving as a local transit hub on the system’s Richmond line.
  • 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_69aed95d315881908cbf1bf4a7215fbf completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aeecf17ef4819083db0a22e24d5b89 completed March 9, 2026, 3:53 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5a82c551c8190a97fdc5a96cf131c completed March 14, 2026, 6:25 p.m.
NEDg Description generation batch_69b5a8a660bc8190bef754d74ec770b3 completed March 14, 2026, 6:27 p.m.
NED2 Entity disambiguation (via description) batch_69b5a93451388190bd40c55634c8f6f0 completed March 14, 2026, 6:30 p.m.
Created at: March 9, 2026, 3:21 p.m.