Triple

T22856491
Position Surface form Disambiguated ID Type / Status
Subject Itumbiara Reservoir E566496 entity
Predicate locatedIn P40 FINISHED
Object Central-West Region of Brazil — 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: Central-West Region of Brazil | Statement: [Itumbiara Reservoir, locatedIn, Central-West Region of Brazil]

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: Central-West Region of Brazil
Context triple: [Itumbiara Reservoir, locatedIn, Central-West Region of Brazil]
  • A. Central-West Region of Brazil chosen
    The Central-West Region of Brazil is a vast inland area that includes the nation’s capital Brasília and is known for its expansive savanna landscapes, agribusiness, and parts of the Amazon and Pantanal biomes.
  • B. South Region of Brazil
    The South Region of Brazil is the country’s smallest and one of its most developed regions, known for its strong European cultural influences, temperate climate, and major cities like Porto Alegre and Curitiba.
  • C. North Region of Brazil
    The North Region of Brazil is the country’s largest and most sparsely populated region, dominated by the Amazon rainforest and major river systems, and known for its vast biodiversity and environmental significance.
  • D. Southeast Region of Brazil
    The Southeast Region of Brazil is the country’s most populous and economically developed area, encompassing major states and cities such as São Paulo, Rio de Janeiro, and Minas Gerais.
  • E. Northeast Region of Brazil
    The Northeast Region of Brazil is a culturally rich and historically significant area known for its colonial heritage, Afro-Brazilian influences, semi-arid hinterlands, and popular coastal tourist destinations.
  • 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_69e2458750b481908a8e4cf4609cc6cf elicitation completed
NER batch_69f17ebd7d48819085f350f2ce4144a0 ner completed
Created at: April 17, 2026, 3:37 p.m.