Triple

T22854656
Position Surface form Disambiguated ID Type / Status
Subject American Centrifuge Plant (planned) E566446 entity
Predicate location P40 FINISHED
Object Portsmouth Gaseous Diffusion Plant site — 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: Portsmouth Gaseous Diffusion Plant site | Statement: [American Centrifuge Plant (planned), location, Portsmouth Gaseous Diffusion Plant site]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Portsmouth Gaseous Diffusion Plant site
Context triple: [American Centrifuge Plant (planned), location, Portsmouth Gaseous Diffusion Plant site]
  • A. Portsmouth Gaseous Diffusion Plant (historical) chosen
    The Portsmouth Gaseous Diffusion Plant was a major U.S. uranium enrichment facility in Ohio that played a key role in producing enriched uranium for nuclear weapons and commercial nuclear power during the Cold War.
  • B. Oak Ridge Gaseous Diffusion Plant
    The Oak Ridge Gaseous Diffusion Plant was a major U.S. uranium enrichment facility in Oak Ridge, Tennessee, built during the Manhattan Project and later used for Cold War nuclear fuel production.
  • C. Paducah Gaseous Diffusion Plant
    The Paducah Gaseous Diffusion Plant is a former U.S. Department of Energy uranium enrichment facility in western Kentucky that played a major role in producing enriched uranium for nuclear power and defense.
  • D. Savannah River Site
    Savannah River Site is a U.S. Department of Energy nuclear reservation in South Carolina historically used for producing materials for nuclear weapons and now focused on environmental cleanup and nuclear materials management.
  • E. Fernald uranium plant
    The Fernald uranium plant was a U.S. Department of Energy facility near Cincinnati, Ohio, that processed uranium for nuclear weapons production and later became a major environmental cleanup site.
  • 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_69e2458750b481908a8e4cf4609cc6cf completed April 17, 2026, 2:36 p.m.
NER Named-entity recognition batch_69f17ebb4ea48190b4b865e316f6a75f completed April 29, 2026, 3:44 a.m.
Created at: April 17, 2026, 3:37 p.m.