Triple

T20597261
Position Surface form Disambiguated ID Type / Status
Subject Deer Lodge County E506081 entity
Predicate contains P35 FINISHED
Object Anaconda Smelter Stack — NE NERFINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Anaconda Smelter Stack | Statement: [Deer Lodge County, contains, Anaconda Smelter Stack]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Anaconda Smelter Stack
Context triple: [Deer Lodge County, contains, Anaconda Smelter Stack]
  • A. Anaconda Smelter Stack chosen
    The Anaconda Smelter Stack is a towering historic smokestack in Anaconda, Montana, and one of the tallest free-standing masonry structures in the world, symbolizing the region’s copper-smelting past.
  • B. Anaconda Smelter Superfund site
    The Anaconda Smelter Superfund site is a large, historically industrial area in Montana undergoing long-term environmental cleanup due to extensive contamination from past copper smelting operations.
  • C. Quincy Smelter
    Quincy Smelter is a historic copper smelting complex in Michigan’s Keweenaw Peninsula, notable as one of the most intact remnants of the region’s 19th- and early 20th-century copper mining industry.
  • D. Tsumeb Smelter
    Tsumeb Smelter is a major metal-processing plant in Tsumeb, Namibia, known for treating complex copper and base-metal concentrates.
  • E. Anaconda Mine
    Anaconda Mine was a major copper mining operation in Montana that played a central role in the region’s industrial development and gave its name to the nearby town of Anaconda.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e0b4ba6ae88190af871e1f9522c704 elicitation completed
NER batch_69e6aa1d15b08190a720fc7cefbf333e ner completed
Created at: April 16, 2026, 11:40 a.m.