Triple

T17596836
Position Surface form Disambiguated ID Type / Status
Subject Hetch Hetchy Power System E428593 entity
Predicate hasPart P35 FINISHED
Object Moccasin Penstock
Moccasin Penstock is a major water-conveyance structure within California’s Hetch Hetchy hydroelectric system that channels high-pressure flows to generate power at the Moccasin facilities.
E1279070 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: Moccasin Penstock | Statement: [Hetch Hetchy Power System, hasPart, Moccasin Penstock]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Moccasin Penstock
Context triple: [Hetch Hetchy Power System, hasPart, Moccasin Penstock]
  • A. Kirkwood Penstock
    Kirkwood Penstock is a major water-conveyance structure within California’s Hetch Hetchy hydroelectric power network, channeling high-pressure flows to generate electricity.
  • B. Narrows Dam
    Narrows Dam is a hydroelectric dam located on the Yadkin River in North Carolina, forming part of a major reservoir and power-generating system in the region.
  • C. Red Rock Dam
    Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
  • D. Pathfinder Dam
    Pathfinder Dam is a historic early 20th-century masonry dam in Wyoming that forms Pathfinder Reservoir and provides water storage and flood control on the North Platte River.
  • E. Diablo Dam
    Diablo Dam is a concrete arch dam in Washington State that forms Diablo Lake as part of the Skagit River Hydroelectric Project, providing power and water storage for the region.
  • 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: Moccasin Penstock
Triple: [Hetch Hetchy Power System, hasPart, Moccasin Penstock]
Generated description
Moccasin Penstock is a major water-conveyance structure within California’s Hetch Hetchy hydroelectric system that channels high-pressure flows to generate power at the Moccasin facilities.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Moccasin Penstock
Target entity description: Moccasin Penstock is a major water-conveyance structure within California’s Hetch Hetchy hydroelectric system that channels high-pressure flows to generate power at the Moccasin facilities.
  • A. Kirkwood Penstock
    Kirkwood Penstock is a major water-conveyance structure within California’s Hetch Hetchy hydroelectric power network, channeling high-pressure flows to generate electricity.
  • B. Narrows Dam
    Narrows Dam is a hydroelectric dam located on the Yadkin River in North Carolina, forming part of a major reservoir and power-generating system in the region.
  • C. Red Rock Dam
    Red Rock Dam is a large flood-control and hydroelectric dam on the Des Moines River in central Iowa, forming Lake Red Rock as the state’s largest reservoir.
  • D. Pathfinder Dam
    Pathfinder Dam is a historic early 20th-century masonry dam in Wyoming that forms Pathfinder Reservoir and provides water storage and flood control on the North Platte River.
  • E. Diablo Dam
    Diablo Dam is a concrete arch dam in Washington State that forms Diablo Lake as part of the Skagit River Hydroelectric Project, providing power and water storage for the region.
  • 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_69d889e1030481909950e140c63255b9 completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e469ec335c8190abcaff700cfff23b completed April 19, 2026, 5:36 a.m.
NED1 Entity disambiguation (via context triple) batch_6a020a8d230c8190adadb2464e208324 completed May 11, 2026, 4:57 p.m.
NEDg Description generation batch_6a020b6fc2908190a2e4c54f20f1fa1f completed May 11, 2026, 5:01 p.m.
NED2 Entity disambiguation (via description) batch_6a020bf5d45c819097fc5a516587263c completed May 11, 2026, 5:03 p.m.
Created at: April 10, 2026, 5:51 a.m.