Triple
T369977
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | SamTrans |
E8245
|
entity |
| Predicate | governingBody |
P46
|
FINISHED |
| Object |
Board of Directors of the San Mateo County Transit District
The Board of Directors of the San Mateo County Transit District is the policy-making and oversight body that directs and supervises the operations, budget, and strategic planning of SamTrans public transportation services in San Mateo County, California.
|
E47174
|
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: Board of Directors of the San Mateo County Transit District | Statement: [SamTrans, governingBody, Board of Directors of the San Mateo County Transit District]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Board of Directors of the San Mateo County Transit District Context triple: [SamTrans, governingBody, Board of Directors of the San Mateo County Transit District]
-
A.
Metro Board of Directors
The Metro Board of Directors is the policy-making body that oversees planning, funding, and operation of Los Angeles County’s public transportation system.
-
B.
San Francisco Board of Supervisors
The San Francisco Board of Supervisors is the city and county’s elected legislative body, responsible for passing local laws, approving budgets, and overseeing municipal agencies.
-
C.
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.
-
D.
TriMet Board of Directors
The TriMet Board of Directors is the policy-making and oversight body that directs the operations and strategic decisions of the Portland-area public transit agency TriMet.
-
E.
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.
- 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: Board of Directors of the San Mateo County Transit District Triple: [SamTrans, governingBody, Board of Directors of the San Mateo County Transit District]
Generated description
The Board of Directors of the San Mateo County Transit District is the policy-making and oversight body that directs and supervises the operations, budget, and strategic planning of SamTrans public transportation services in San Mateo County, California.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Board of Directors of the San Mateo County Transit District Target entity description: The Board of Directors of the San Mateo County Transit District is the policy-making and oversight body that directs and supervises the operations, budget, and strategic planning of SamTrans public transportation services in San Mateo County, California.
-
A.
Metro Board of Directors
The Metro Board of Directors is the policy-making body that oversees planning, funding, and operation of Los Angeles County’s public transportation system.
-
B.
San Francisco Board of Supervisors
The San Francisco Board of Supervisors is the city and county’s elected legislative body, responsible for passing local laws, approving budgets, and overseeing municipal agencies.
-
C.
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.
-
D.
TriMet Board of Directors
The TriMet Board of Directors is the policy-making and oversight body that directs the operations and strategic decisions of the Portland-area public transit agency TriMet.
-
E.
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.
- 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_69a2e7f2ec648190b42bc7db424f8109 |
completed | Feb. 28, 2026, 1:04 p.m. |
| NER | Named-entity recognition | batch_69a2ebfdb0608190b1794a871d0d237a |
completed | Feb. 28, 2026, 1:22 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3f0a78c748190ae5e64919f1d6501 |
completed | March 1, 2026, 7:54 a.m. |
| NEDg | Description generation | batch_69a3f0fc6984819092d92f76055d3f19 |
completed | March 1, 2026, 7:55 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a3f16c66a081909a449fc3b606aaf9 |
completed | March 1, 2026, 7:57 a.m. |
Created at: Feb. 28, 2026, 1:08 p.m.