Triple

T13607469
Position Surface form Disambiguated ID Type / Status
Subject Castaic Lake E325101 entity
Predicate associatedStructure P14529 FINISHED
Object Castaic Power Plant
Castaic Power Plant is a large pumped-storage hydroelectric facility in Los Angeles County, California, that generates electricity by moving water between Castaic Lake and Pyramid Lake to help balance regional power demand.
E1051946 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: Castaic Power Plant | Statement: [Castaic Lake, associatedStructure, Castaic Power Plant]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Castaic Power Plant
Context triple: [Castaic Lake, associatedStructure, Castaic Power Plant]
  • A. Folsom Powerplant
    Folsom Powerplant is a hydroelectric generating facility in California that harnesses water from Folsom Dam to produce electricity and support regional water and flood management.
  • B. Pine Flat Power Plant
    Pine Flat Power Plant is a hydroelectric generating facility located at Pine Flat Dam on the Kings River in California, producing renewable electricity from the dam’s water releases.
  • C. Palo Seco Power Plant
    Palo Seco Power Plant is a major thermoelectric generating station in Puerto Rico that supplies electricity to the San Juan metropolitan area and surrounding regions.
  • D. Gianelli Pumping–Generating Plant
    The Gianelli Pumping–Generating Plant is a major hydroelectric and pumping facility in California that moves water for irrigation and storage while generating electricity as part of the state’s Central Valley Project.
  • E. Devil Canyon Powerplant
    Devil Canyon Powerplant is a hydroelectric generating facility in Southern California that produces power as part of the State Water Project’s water conveyance and energy system.
  • 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: Castaic Power Plant
Triple: [Castaic Lake, associatedStructure, Castaic Power Plant]
Generated description
Castaic Power Plant is a large pumped-storage hydroelectric facility in Los Angeles County, California, that generates electricity by moving water between Castaic Lake and Pyramid Lake to help balance regional power demand.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Castaic Power Plant
Target entity description: Castaic Power Plant is a large pumped-storage hydroelectric facility in Los Angeles County, California, that generates electricity by moving water between Castaic Lake and Pyramid Lake to help balance regional power demand.
  • A. Folsom Powerplant
    Folsom Powerplant is a hydroelectric generating facility in California that harnesses water from Folsom Dam to produce electricity and support regional water and flood management.
  • B. Pine Flat Power Plant
    Pine Flat Power Plant is a hydroelectric generating facility located at Pine Flat Dam on the Kings River in California, producing renewable electricity from the dam’s water releases.
  • C. Palo Seco Power Plant
    Palo Seco Power Plant is a major thermoelectric generating station in Puerto Rico that supplies electricity to the San Juan metropolitan area and surrounding regions.
  • D. Gianelli Pumping–Generating Plant
    The Gianelli Pumping–Generating Plant is a major hydroelectric and pumping facility in California that moves water for irrigation and storage while generating electricity as part of the state’s Central Valley Project.
  • E. Devil Canyon Powerplant
    Devil Canyon Powerplant is a hydroelectric generating facility in Southern California that produces power as part of the State Water Project’s water conveyance and energy system.
  • 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_69d80769eaf081909d82f44e484d6113 completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69dbb07f462c8190b5b5e115d550037f completed April 12, 2026, 2:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69f77f96280881908bab3af5c80f6d55 completed May 3, 2026, 5:02 p.m.
NEDg Description generation batch_69f780850ffc8190b41b3ff7ca35494f completed May 3, 2026, 5:06 p.m.
NED2 Entity disambiguation (via description) batch_69f7849416b88190a0ef9d3e26e7b129 completed May 3, 2026, 5:23 p.m.
Created at: April 9, 2026, 9:50 p.m.