Triple

T21490885
Position Surface form Disambiguated ID Type / Status
Subject Raker Act E530231 entity
Predicate resultedIn P374 FINISHED
Object flooding of Hetch Hetchy Valley — NE NERFINISHED

How this triple was built (2 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: flooding of Hetch Hetchy Valley | Statement: [Raker Act, resultedIn, flooding of Hetch Hetchy Valley]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: flooding of Hetch Hetchy Valley
Context triple: [Raker Act, resultedIn, flooding of Hetch Hetchy Valley]
  • A. Hetch Hetchy Regional Water System
    The Hetch Hetchy Regional Water System is a major water supply and delivery network that provides high-quality drinking water from Sierra Nevada sources to San Francisco and numerous Bay Area communities.
  • B. Hetch Hetchy water rights controversy
    The Hetch Hetchy water rights controversy was an early 20th-century environmental and political battle over damming a Yosemite valley to supply water to San Francisco, helping to define the modern American conservation movement.
  • C. Hetch Hetchy Reservoir chosen
    Hetch Hetchy Reservoir is a man-made lake in Yosemite National Park that stores water and generates hydroelectric power for the San Francisco Bay Area.
  • D. Long Valley Dam
    Long Valley Dam is a concrete arch dam in Mono County, California, that impounds the Owens River to create Crowley Lake for water storage, hydroelectric power, and recreation.
  • E. Hetch Hetchy Valley
    Hetch Hetchy Valley is a glacially carved valley in Yosemite National Park, California, best known for its scenic granite cliffs and for being largely submerged by the Hetch Hetchy Reservoir that supplies water to the San Francisco Bay Area.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 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_69e0c45bd15481909fba5910765cdda2 completed April 16, 2026, 11:13 a.m.
NER Named-entity recognition batch_69e9ea3aee648190ba845f0c7d8110dd completed April 23, 2026, 9:45 a.m.
Created at: April 16, 2026, 6:22 p.m.