Triple
T2592847
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Peninsula rail corridor |
E58161
|
entity |
| Predicate | infrastructureOwner |
P347
|
FINISHED |
| Object | Peninsula Corridor Joint Powers Board |
E10436
|
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: Peninsula Corridor Joint Powers Board | Statement: [Peninsula rail corridor, infrastructureOwner, Peninsula Corridor Joint Powers Board]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Peninsula Corridor Joint Powers Board Context triple: [Peninsula rail corridor, infrastructureOwner, Peninsula Corridor Joint Powers Board]
-
A.
Peninsula Corridor Joint Powers Board
chosen
The Peninsula Corridor Joint Powers Board is a public agency formed by Bay Area counties to oversee and manage the Caltrain commuter rail service along the San Francisco Peninsula.
-
B.
Capitol Corridor Joint Powers Authority
The Capitol Corridor Joint Powers Authority is a California-based public agency that oversees and manages Amtrak’s Capitol Corridor intercity passenger rail service between the Sacramento–San Francisco Bay Area region and surrounding communities.
-
C.
Metropolitan Transportation Commission
The Metropolitan Transportation Commission is the regional planning, financing, and coordinating agency for transportation in the nine-county San Francisco Bay Area.
-
D.
San Joaquin Regional Rail Commission
The San Joaquin Regional Rail Commission is a public agency in California responsible for planning, managing, and overseeing regional passenger rail services in the San Joaquin Valley and surrounding areas.
-
E.
Santa Clara Valley Transportation Authority
The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
- 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_69ab4ac019c8819094add11c46706e32 |
completed | March 6, 2026, 9:44 p.m. |
| NER | Named-entity recognition | batch_69abd426e2d4819081a07920b4d2a1cc |
completed | March 7, 2026, 7:30 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69af83bee4908190b5e446ddbf4e8889 |
completed | March 10, 2026, 2:36 a.m. |
Created at: March 6, 2026, 9:49 p.m.