Triple
T14889188
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Alameda-Contra Costa Transit District |
E359707
|
entity |
| Predicate | connectsTo |
P845
|
FINISHED |
| Object |
Amtrak Capitol Corridor stations
Amtrak Capitol Corridor stations are passenger rail stops along the Capitol Corridor route in Northern California, serving key cities between Auburn/Sacramento and San Jose with regional intercity train service.
|
E1125769
|
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: Amtrak Capitol Corridor stations | Statement: [Alameda-Contra Costa Transit District, connectsTo, Amtrak Capitol Corridor stations]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak Capitol Corridor stations Context triple: [Alameda-Contra Costa Transit District, connectsTo, Amtrak Capitol Corridor stations]
-
A.
Amtrak Sacramento Valley Station
Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
-
B.
Madera Amtrak station
Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
-
C.
Martinez Amtrak station
Martinez Amtrak station is a passenger rail station in Martinez, California, serving as a key stop for Amtrak trains in the San Francisco Bay Area.
-
D.
Caltrain stations
Caltrain stations are commuter rail stops along the San Francisco Peninsula and South Bay that serve as key transit hubs connecting cities between San Francisco and Gilroy.
-
E.
Fresno Amtrak Station
Fresno Amtrak Station is a central passenger rail hub in Fresno, California, serving Amtrak’s San Joaquins line and connecting the city to major destinations across the state.
- 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: Amtrak Capitol Corridor stations Triple: [Alameda-Contra Costa Transit District, connectsTo, Amtrak Capitol Corridor stations]
Generated description
Amtrak Capitol Corridor stations are passenger rail stops along the Capitol Corridor route in Northern California, serving key cities between Auburn/Sacramento and San Jose with regional intercity train service.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Amtrak Capitol Corridor stations Target entity description: Amtrak Capitol Corridor stations are passenger rail stops along the Capitol Corridor route in Northern California, serving key cities between Auburn/Sacramento and San Jose with regional intercity train service.
-
A.
Amtrak Sacramento Valley Station
Amtrak Sacramento Valley Station is the main intercity passenger rail station in Sacramento, California, serving Amtrak trains and regional transit connections.
-
B.
Madera Amtrak station
Madera Amtrak station is a passenger rail station in Madera, California, served by Amtrak’s San Joaquins route in the San Joaquin Valley.
-
C.
Martinez Amtrak station
Martinez Amtrak station is a passenger rail station in Martinez, California, serving as a key stop for Amtrak trains in the San Francisco Bay Area.
-
D.
Caltrain stations
Caltrain stations are commuter rail stops along the San Francisco Peninsula and South Bay that serve as key transit hubs connecting cities between San Francisco and Gilroy.
-
E.
Fresno Amtrak Station
Fresno Amtrak Station is a central passenger rail hub in Fresno, California, serving Amtrak’s San Joaquins line and connecting the city to major destinations across the state.
- 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_69d827980cbc8190a0c569ae3940a1d9 |
completed | April 9, 2026, 10:26 p.m. |
| NER | Named-entity recognition | batch_69ded5f6cf5c8190b6b28f58fafe5d59 |
completed | April 15, 2026, 12:04 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fe6b61407481908a618d14c56d2abf |
completed | May 8, 2026, 11:01 p.m. |
| NEDg | Description generation | batch_69fe6e21bdf481908dba4b745ed4be65 |
completed | May 8, 2026, 11:13 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69fe6ee69860819096a2448ab813dc1d |
completed | May 8, 2026, 11:16 p.m. |
Created at: April 10, 2026, 2:09 a.m.