Triple
T3347109
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Capitol Corridor Joint Powers Authority |
E70401
|
entity |
| Predicate | memberAgency |
P23339
|
FINISHED |
| Object |
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.
|
E359707
|
NE FINISHED |
How this triple was built (4 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: Alameda-Contra Costa Transit District | Statement: [Capitol Corridor Joint Powers Authority, memberAgency, Alameda-Contra Costa Transit District]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Alameda-Contra Costa Transit District Context triple: [Capitol Corridor Joint Powers Authority, memberAgency, Alameda-Contra Costa Transit District]
-
A.
Solano Transportation Authority
Solano Transportation Authority is a public agency that plans, funds, and coordinates transportation projects and services within Solano County, California.
-
B.
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.
-
C.
San Francisco Bay Area Rapid Transit District
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.
-
D.
San Mateo County Transit District
San Mateo County Transit District is the public agency that oversees and manages bus and other transit services in San Mateo County, California.
-
E.
Sacramento Regional Transit
Sacramento Regional Transit is the public transportation agency serving the Sacramento, California metropolitan area with light rail and bus services.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Alameda-Contra Costa Transit District Triple: [Capitol Corridor Joint Powers Authority, memberAgency, Alameda-Contra Costa Transit District]
Generated description
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.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Alameda-Contra Costa Transit District Target entity description: 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.
-
A.
Solano Transportation Authority
Solano Transportation Authority is a public agency that plans, funds, and coordinates transportation projects and services within Solano County, California.
-
B.
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.
-
C.
San Francisco Bay Area Rapid Transit District
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.
-
D.
San Mateo County Transit District
San Mateo County Transit District is the public agency that oversees and manages bus and other transit services in San Mateo County, California.
-
E.
Sacramento Regional Transit
Sacramento Regional Transit is the public transportation agency serving the Sacramento, California metropolitan area with light rail and bus services.
- F. None of above. chosen
Provenance (5 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_69ad85a4ef7c8190a29e2bbd6fa454e4 |
completed | March 8, 2026, 2:20 p.m. |
| NER | Named-entity recognition | batch_69adb21c64448190a29631ea8f029868 |
completed | March 8, 2026, 5:30 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b360a07dec819094b0645d0e2a91da |
completed | March 13, 2026, 12:56 a.m. |
| NEDg | Description generation | batch_69b3615cf80481908ff305f995d0b176 |
completed | March 13, 2026, 12:59 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b362451b848190a2fe80a17ab8f9c3 |
completed | March 13, 2026, 1:03 a.m. |
Created at: March 8, 2026, 3:12 p.m.