Triple
T15450708
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | San Francisco Central Subway project |
E370141
|
entity |
| Predicate | hasStation |
P35
|
FINISHED |
| Object | 4th and Brannan station |
E73821
|
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: 4th and Brannan station | Statement: [San Francisco Central Subway project, hasStation, 4th and Brannan station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 4th and Brannan station Context triple: [San Francisco Central Subway project, hasStation, 4th and Brannan station]
-
A.
4th and Brannan station
chosen
4th and Brannan station is a San Francisco Muni Metro light rail stop on the Central Subway line located in the city's South of Market (SoMa) district.
-
B.
5th Street station
5th Street station is a subway station in Philadelphia that serves the area around Independence Hall and other historic Old City landmarks.
-
C.
4th and King station
4th and King station is a major San Francisco Caltrain terminal and transit hub located near the city's South of Market district.
-
D.
33rd Street station
33rd Street station is a major underground trolley stop in Philadelphia serving SEPTA’s Subway–Surface lines near Drexel University and the University of Pennsylvania.
-
E.
15th Street station
15th Street station is a major underground transit hub in Center City Philadelphia that connects SEPTA’s subway–surface trolleys with the Market–Frankford Line and nearby regional rail services.
- 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_69d85a19180081909925012fbf4e62a3 |
completed | April 10, 2026, 2:02 a.m. |
| NER | Named-entity recognition | batch_69e03efaf82c81908b464e37ce9c159a |
completed | April 16, 2026, 1:44 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ff21b1e9688190a283dbc552072ce0 |
completed | May 9, 2026, 11:59 a.m. |
Created at: April 10, 2026, 3:21 a.m.