Triple
T2071900
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Downtown Oakland |
E44831
|
entity |
| Predicate | hasTransportation |
P105
|
FINISHED |
| Object |
19th Street Oakland station
19th Street Oakland station is a major Bay Area Rapid Transit (BART) underground station serving central Oakland, California.
|
E231569
|
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: 19th Street Oakland station | Statement: [Downtown Oakland, hasTransportation, 19th Street Oakland station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 19th Street Oakland station Context triple: [Downtown Oakland, hasTransportation, 19th Street Oakland station]
-
A.
Oakland City Center/12th Street station
Oakland City Center/12th Street station is a major underground rapid transit hub in downtown Oakland, California, serving multiple Bay Area Rapid Transit (BART) lines.
-
B.
Montgomery Street station
Montgomery Street station is a major Bay Area Rapid Transit (BART) and Muni Metro subway station serving downtown San Francisco’s Financial District.
-
C.
BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
-
D.
Millbrae station
Millbrae station is a major intermodal transit hub in Millbrae, California, serving as a connection point between Caltrain commuter rail, BART rapid transit, and other local transportation services.
-
E.
Yerba Buena/Moscone station
Yerba Buena/Moscone station is an underground San Francisco Muni Metro stop serving the SoMa area and the nearby Moscone Center convention complex.
- 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: 19th Street Oakland station Triple: [Downtown Oakland, hasTransportation, 19th Street Oakland station]
Generated description
19th Street Oakland station is a major Bay Area Rapid Transit (BART) underground station serving central Oakland, California.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 19th Street Oakland station Target entity description: 19th Street Oakland station is a major Bay Area Rapid Transit (BART) underground station serving central Oakland, California.
-
A.
Oakland City Center/12th Street station
Oakland City Center/12th Street station is a major underground rapid transit hub in downtown Oakland, California, serving multiple Bay Area Rapid Transit (BART) lines.
-
B.
Montgomery Street station
Montgomery Street station is a major Bay Area Rapid Transit (BART) and Muni Metro subway station serving downtown San Francisco’s Financial District.
-
C.
BART Embarcadero Station
BART Embarcadero Station is a major underground transit hub in downtown San Francisco serving Bay Area Rapid Transit trains and connecting with Muni Metro light rail lines.
-
D.
Millbrae station
Millbrae station is a major intermodal transit hub in Millbrae, California, serving as a connection point between Caltrain commuter rail, BART rapid transit, and other local transportation services.
-
E.
Yerba Buena/Moscone station
Yerba Buena/Moscone station is an underground San Francisco Muni Metro stop serving the SoMa area and the nearby Moscone Center convention complex.
- 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_69a88916c2b48190a5ca2e9b12cad3ed |
completed | March 4, 2026, 7:33 p.m. |
| NER | Named-entity recognition | batch_69abba0d20bc8190b19a32157f8b1607 |
completed | March 7, 2026, 5:39 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae272bd51881909b7da12925195417 |
completed | March 9, 2026, 1:49 a.m. |
| NEDg | Description generation | batch_69ae28e6d8fc8190b5c0215607214b41 |
completed | March 9, 2026, 1:56 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae29556978819082f771e0723c4f0b |
completed | March 9, 2026, 1:58 a.m. |
Created at: March 4, 2026, 7:41 p.m.