Triple

T15769081
Position Surface form Disambiguated ID Type / Status
Subject Gove alumina refinery E382301 entity
Predicate formerlyOwnedBy P25383 FINISHED
Object Alcan
Alcan was a major Canadian aluminum and packaging company known for its global mining, refining, and smelting operations before being acquired by Rio Tinto.
 E1174820 NE FINISHED

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: Alcan | Statement: [Gove alumina refinery, formerlyOwnedBy, Alcan]

Disambiguation candidates (2 decisions)

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: Alcan
Context triple: [Gove alumina refinery, formerlyOwnedBy, Alcan]
  • A. Alcan
    Alcan is a French publishing house known for issuing significant academic and sociological works in the late 19th and early 20th centuries.
  • B. Kaiser Aluminum
    Kaiser Aluminum is an American industrial company specializing in the production of fabricated aluminum products for aerospace, automotive, and other high-performance applications.
  • C. Alcoa
    Alcoa is a major American industrial corporation known primarily for its global production of aluminum and related engineered products.
  • D. Alcoa
    Alcoa is a small industrial city in Blount County, Tennessee, historically centered around aluminum production and part of the Knoxville metropolitan area.
  • E. Stelco
    Stelco is a major Canadian steel manufacturing company historically central to the industrial and economic identity of Hamilton, Ontario.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Alcan
Target entity description: Alcan was a major Canadian aluminum and packaging company known for its global mining, refining, and smelting operations before being acquired by Rio Tinto.
  • A. Alcan
    Alcan is a French publishing house known for issuing significant academic and sociological works in the late 19th and early 20th centuries.
  • B. Kaiser Aluminum
    Kaiser Aluminum is an American industrial company specializing in the production of fabricated aluminum products for aerospace, automotive, and other high-performance applications.
  • C. Alcoa
    Alcoa is a small industrial city in Blount County, Tennessee, historically centered around aluminum production and part of the Knoxville metropolitan area.
  • D. Alcoa
    Alcoa is a major American industrial corporation known primarily for its global production of aluminum and related engineered products.
  • E. Stelco
    Stelco is a major Canadian steel manufacturing company historically central to the industrial and economic identity of Hamilton, Ontario.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Alcan
Triple: [Gove alumina refinery, formerlyOwnedBy, Alcan]
Generated description
Alcan was a major Canadian aluminum and packaging company known for its global mining, refining, and smelting operations before being acquired by Rio Tinto.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d86da09a10819082fe9797b23e4664 elicitation completed
NER batch_69e051951bac8190a7d45f3612c6de72 ner completed
NED1 batch_69ff877a67008190b05f879d05876fd3 ned_source_triple completed
NED2 batch_69ff88aca9b08190ab2b687dd17d0845 ned_description completed
NEDg batch_69ff88430cb88190994039da4d3ce247 nedg completed
Created at: April 10, 2026, 4:47 a.m.