Triple
T13691534
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ventura River watershed |
E328277
|
entity |
| Predicate | contains |
P35
|
FINISHED |
| Object |
Matilija Reservoir
Matilija Reservoir is a man-made lake in Ventura County, California, created by Matilija Dam on Matilija Creek and known for its role in regional water supply, sediment buildup issues, and ongoing dam removal and river restoration efforts.
|
E1102366
|
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: Matilija Reservoir | Statement: [Ventura River watershed, contains, Matilija Reservoir]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Matilija Reservoir Context triple: [Ventura River watershed, contains, Matilija Reservoir]
-
A.
Calaveras Reservoir
Calaveras Reservoir is a major water storage reservoir in California’s Diablo Range that supplies drinking water to the San Francisco Bay Area.
-
B.
Pardee Reservoir
Pardee Reservoir is a man-made lake in the Sierra Nevada foothills of California that serves as a major water storage and supply source for the East Bay region.
-
C.
Yuba Reservoir
Yuba Reservoir is a man-made lake in central Utah popular for boating, fishing, and camping.
-
D.
Shasta Lake
Shasta Lake is a large reservoir in Northern California known for its extensive shoreline, houseboating, and proximity to Mount Shasta.
-
E.
Folsom Lake
Folsom Lake is a large man-made reservoir in Northern California known for recreation, water storage, and flood control near the Sacramento area.
- 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: Matilija Reservoir Triple: [Ventura River watershed, contains, Matilija Reservoir]
Generated description
Matilija Reservoir is a man-made lake in Ventura County, California, created by Matilija Dam on Matilija Creek and known for its role in regional water supply, sediment buildup issues, and ongoing dam removal and river restoration efforts.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Matilija Reservoir Target entity description: Matilija Reservoir is a man-made lake in Ventura County, California, created by Matilija Dam on Matilija Creek and known for its role in regional water supply, sediment buildup issues, and ongoing dam removal and river restoration efforts.
-
A.
Calaveras Reservoir
Calaveras Reservoir is a major water storage reservoir in California’s Diablo Range that supplies drinking water to the San Francisco Bay Area.
-
B.
Pardee Reservoir
Pardee Reservoir is a man-made lake in the Sierra Nevada foothills of California that serves as a major water storage and supply source for the East Bay region.
-
C.
Yuba Reservoir
Yuba Reservoir is a man-made lake in central Utah popular for boating, fishing, and camping.
-
D.
Shasta Lake
Shasta Lake is a large reservoir in Northern California known for its extensive shoreline, houseboating, and proximity to Mount Shasta.
-
E.
Folsom Lake
Folsom Lake is a large man-made reservoir in Northern California known for recreation, water storage, and flood control near the Sacramento area.
- 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_69d8076ff62081908a7bd79889edd7a0 |
completed | April 9, 2026, 8:09 p.m. |
| NER | Named-entity recognition | batch_69dbc8746458819095ec1ba3c01ef31b |
completed | April 12, 2026, 4:29 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69fd6d72a17c8190b63f9f441731917d |
completed | May 8, 2026, 4:58 a.m. |
| NEDg | Description generation | batch_69fd6de8b640819098adc7fb05acba7a |
completed | May 8, 2026, 5 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69fd6fadf9b0819086ef8ffec340d7c6 |
completed | May 8, 2026, 5:07 a.m. |
Created at: April 9, 2026, 9:53 p.m.