Triple
T9597613
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Oakland Amtrak station (Jack London Square) |
E231570
|
entity |
| Predicate | servesRoute |
P31354
|
FINISHED |
| Object | Oakland–Sacramento segment of Capitol Corridor |
E13501
|
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: Oakland–Sacramento segment of Capitol Corridor | Statement: [Oakland Amtrak station (Jack London Square), servesRoute, Oakland–Sacramento segment of Capitol Corridor]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Oakland–Sacramento segment of Capitol Corridor Context triple: [Oakland Amtrak station (Jack London Square), servesRoute, Oakland–Sacramento segment of Capitol Corridor]
-
A.
Amtrak Capitol Corridor
chosen
Amtrak Capitol Corridor is a passenger rail service in Northern California that connects Sacramento, the San Francisco Bay Area, and San Jose with frequent, commuter-oriented trains.
-
B.
Union Pacific Railroad Oakland Subdivision
The Union Pacific Railroad Oakland Subdivision is a key freight and passenger rail corridor in Northern California that connects the East Bay with the Central Valley and is used by services such as the Altamont Corridor Express.
-
C.
Alameda/Oakland–San Francisco route
The Alameda/Oakland–San Francisco route is a commuter and tourist ferry service across San Francisco Bay connecting the East Bay cities of Alameda and Oakland with San Francisco.
-
D.
Union Pacific Railroad Martinez Subdivision
The Union Pacific Railroad Martinez Subdivision is a key freight and passenger rail corridor in Northern California that runs along the eastern shore of the San Francisco Bay and through the Carquinez Strait area.
-
E.
Altamont Corridor Express
Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the San Francisco Bay Area.
- 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_69ca8482884481908eccdfdf64d6fbf7 |
completed | March 30, 2026, 2:11 p.m. |
| NER | Named-entity recognition | batch_69cd9a34f5408190ba72ba8311eb259c |
completed | April 1, 2026, 10:20 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d1792461208190968276ade7c4165d |
completed | April 4, 2026, 8:48 p.m. |
Created at: March 30, 2026, 8:07 p.m.