Triple
T9597552
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | 19th Street Oakland station |
E231569
|
entity |
| Predicate | isOnLine |
P15096
|
FINISHED |
| Object | BART Berryessa line |
E775647
|
NE FINISHED |
How this triple was built (2 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 Berryessa line | Statement: [19th Street Oakland station, isOnLine, BART Berryessa line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: BART Berryessa line Context triple: [19th Street Oakland station, isOnLine, BART Berryessa line]
-
A.
BART Berryessa/North San José–Daly City line
chosen
The BART Berryessa/North San José–Daly City line is a Bay Area Rapid Transit service connecting San José’s Berryessa/North San José station with Daly City through downtown San Francisco and the East Bay.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
BART Orange Line
The BART Orange Line is a Bay Area Rapid Transit service route that runs through the East Bay and South Bay, connecting cities such as Richmond, Oakland, and San José.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69ca8482884481908eccdfdf64d6fbf7 |
completed | March 30, 2026, 2:11 p.m. |
| NER | Named-entity recognition | batch_69cd9a34f5408190ba72ba8311eb259c |
completed | April 1, 2026, 10:20 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d1c3fd3a2c81909a19aafd70b3c150 |
completed | April 5, 2026, 2:07 a.m. |
Created at: March 30, 2026, 8:07 p.m.