Triple
T1540393
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | San Francisco–Oakland Bay Bridge |
E32851
|
entity |
| Predicate | hasPart |
P35
|
FINISHED |
| Object | Yerba Buena Island tunnel |
E108102
|
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: Yerba Buena Island tunnel | Statement: [San Francisco–Oakland Bay Bridge, hasPart, Yerba Buena Island tunnel]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Yerba Buena Island tunnel Context triple: [San Francisco–Oakland Bay Bridge, hasPart, Yerba Buena Island tunnel]
-
A.
Yerba Buena Tunnel
chosen
Yerba Buena Tunnel is a vehicular tunnel in the San Francisco Bay that carries the San Francisco–Oakland Bay Bridge through Yerba Buena Island, connecting its eastern and western spans.
-
B.
Transbay Tube
The Transbay Tube is an underwater rail tunnel beneath San Francisco Bay that carries BART trains between San Francisco and Oakland.
-
C.
53rd Street Tunnel
The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
-
D.
Eisenhower–Johnson Memorial Tunnel
The Eisenhower–Johnson Memorial Tunnel is a high-altitude vehicular tunnel through the Rocky Mountains in Colorado, carrying Interstate 70 beneath the Continental Divide.
-
E.
San Mateo–Hayward Bridge
The San Mateo–Hayward Bridge is a major vehicular bridge in the San Francisco Bay Area that carries traffic across the bay between the San Mateo Peninsula and the East Bay.
- 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_69a885ed29088190a3c2d5a3d100c16e |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69a9083c942481909168394b6674d82b |
completed | March 5, 2026, 4:36 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad30997d408190916f16d31bcc35b4 |
completed | March 8, 2026, 8:17 a.m. |
Created at: March 4, 2026, 7:26 p.m.