Triple

T17596829
Position Surface form Disambiguated ID Type / Status
Subject Hetch Hetchy Power System E428593 entity
Predicate hasPart P35 FINISHED
Object Moccasin Low-Head Generating Plant
The Moccasin Low-Head Generating Plant is a hydroelectric power facility in California that forms part of the Hetch Hetchy system supplying electricity to the San Francisco Bay Area.
 E1278184 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 Low-Head Generating Plant | Statement: [Hetch Hetchy Power System, hasPart, Moccasin Low-Head Generating Plant]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Moccasin Low-Head Generating Plant
Context triple: [Hetch Hetchy Power System, hasPart, Moccasin Low-Head Generating Plant]
  • A. Stevenson Dam Hydroelectric Plant
    Stevenson Dam Hydroelectric Plant is a hydroelectric power station in Connecticut that generates electricity using water impounded by the Stevenson Dam on the Housatonic River.
  • B. Pullinque Hydroelectric Plant
    Pullinque Hydroelectric Plant is a hydroelectric power facility in southern Chile that generates electricity using water resources associated with Pullinque Lake.
  • C. Parker Dam powerplant
    Parker Dam powerplant is a hydroelectric generating facility on the Colorado River that produces power and supports water management as part of the broader Parker-Davis Project.
  • D. Denison Dam Power Plant
    Denison Dam Power Plant is a hydroelectric generating facility located at Denison Dam on the Red River, producing renewable electricity from the dam’s reservoir outflows.
  • E. Narrows Hydroelectric Plant
    The Narrows Hydroelectric Plant is a hydroelectric power station that generates electricity using water impounded by Narrows Dam.
  • 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 Low-Head Generating Plant
Triple: [Hetch Hetchy Power System, hasPart, Moccasin Low-Head Generating Plant]
Generated description
The Moccasin Low-Head Generating Plant is a hydroelectric power facility in California that forms part of the Hetch Hetchy system supplying electricity to the San Francisco Bay Area.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Moccasin Low-Head Generating Plant
Target entity description: The Moccasin Low-Head Generating Plant is a hydroelectric power facility in California that forms part of the Hetch Hetchy system supplying electricity to the San Francisco Bay Area.
  • A. Stevenson Dam Hydroelectric Plant
    Stevenson Dam Hydroelectric Plant is a hydroelectric power station in Connecticut that generates electricity using water impounded by the Stevenson Dam on the Housatonic River.
  • B. Pullinque Hydroelectric Plant
    Pullinque Hydroelectric Plant is a hydroelectric power facility in southern Chile that generates electricity using water resources associated with Pullinque Lake.
  • C. Parker Dam powerplant
    Parker Dam powerplant is a hydroelectric generating facility on the Colorado River that produces power and supports water management as part of the broader Parker-Davis Project.
  • D. Denison Dam Power Plant
    Denison Dam Power Plant is a hydroelectric generating facility located at Denison Dam on the Red River, producing renewable electricity from the dam’s reservoir outflows.
  • E. Narrows Hydroelectric Plant
    The Narrows Hydroelectric Plant is a hydroelectric power station that generates electricity using water impounded by Narrows Dam.
  • 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_6a01e817f7248190b7166fbd28393b00 completed May 11, 2026, 2:30 p.m.
NEDg Description generation batch_6a01f002f630819088bc0b7506ceb4d7 completed May 11, 2026, 3:04 p.m.
NED2 Entity disambiguation (via description) batch_6a01f0ebf9e4819091d1b59964c6a275 completed May 11, 2026, 3:08 p.m.
Created at: April 10, 2026, 5:51 a.m.