Triple
T16758665
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | BART Green Line |
E407276
|
entity |
| Predicate | isPartOfExpansion |
P8787
|
FINISHED |
| Object | Silicon Valley BART extension |
E393030
|
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: Silicon Valley BART extension | Statement: [BART Green Line, isPartOfExpansion, Silicon Valley BART extension]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Silicon Valley BART extension Context triple: [BART Green Line, isPartOfExpansion, Silicon Valley BART extension]
-
A.
BART Silicon Valley extension
chosen
The BART Silicon Valley extension is a major Bay Area Rapid Transit project extending rail service into Santa Clara County, including new stations in San José and surrounding areas.
-
B.
BART Antioch extension corridor
The BART Antioch extension corridor is the transit infrastructure corridor in eastern Contra Costa County that carries BART’s eBART service between Pittsburg/Bay Point and Antioch as part of the broader Antioch extension project.
-
C.
San Francisco Central Subway project
The San Francisco Central Subway project is a major Muni Metro light rail extension in San Francisco designed to improve north–south transit connectivity by linking neighborhoods such as SoMa, Union Square, and Chinatown.
-
D.
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.
-
E.
East Bay BART corridor
The East Bay BART corridor is a major rapid transit route running through the eastern side of the San Francisco Bay Area, connecting multiple cities via Bay Area Rapid Transit.
- 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_69d8839174188190909f190097207065 |
completed | April 10, 2026, 4:58 a.m. |
| NER | Named-entity recognition | batch_69e3abea156c8190a5ee6d0028471810 |
completed | April 18, 2026, 4:06 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a00a52b17b88190af24c04d16980c9f |
completed | May 10, 2026, 3:32 p.m. |
Created at: April 10, 2026, 5:21 a.m.