Triple
T16194736
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union City station |
E393032
|
entity |
| Predicate | partOf |
P40
|
FINISHED |
| Object | Bay Area Rapid Transit system |
E87163
|
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: Bay Area Rapid Transit system | Statement: [Union City station, partOf, Bay Area Rapid Transit system]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Bay Area Rapid Transit system Context triple: [Union City station, partOf, Bay Area Rapid Transit system]
-
A.
San Francisco Bay Area Rapid Transit District
chosen
The San Francisco Bay Area Rapid Transit District is the public agency that plans, funds, and oversees the Bay Area’s regional BART rail transit system.
-
B.
Transbay BART network
The Transbay BART network is the portion of the Bay Area Rapid Transit system that carries trains through the Transbay Tube between San Francisco and the East Bay, forming a critical regional rail link under San Francisco Bay.
-
C.
San Francisco Muni
San Francisco Muni is the primary public transportation system in San Francisco, operating the city’s network of buses, light rail, historic streetcars, and cable cars.
-
D.
Alameda-Contra Costa Transit District
The Alameda-Contra Costa Transit District is a public transit agency serving the East Bay region of the San Francisco Bay Area, primarily providing bus services across Alameda and Contra Costa counties.
-
E.
BART
BART is a sequence-to-sequence transformer model developed by Facebook AI for tasks like text generation, summarization, and translation.
- 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_69d87f1e49ac8190a311b54d32990576 |
completed | April 10, 2026, 4:39 a.m. |
| NER | Named-entity recognition | batch_69e222d851188190b2452d165e4fc4bd |
completed | April 17, 2026, 12:08 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a003c46bd2081908d6d9fd1898ea5f7 |
completed | May 10, 2026, 8:05 a.m. |
Created at: April 10, 2026, 5:02 a.m.