Triple

T21312169
Position Surface form Disambiguated ID Type / Status
Subject Asa River E525366 entity
Predicate isPartOf P10 FINISHED
Object Niger River basin — 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: Niger River basin | Statement: [Asa River, isPartOf, Niger River basin]

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: Niger River basin
Context triple: [Asa River, isPartOf, Niger River basin]
  • A. Sanaga River basin
    The Sanaga River basin is the extensive watershed in Cameroon that collects and channels rainfall and tributary flows into the Sanaga River, the country’s largest river system and a key resource for hydropower, ecosystems, and local livelihoods.
  • B. Niger River valley chosen
    The Niger River valley is a fertile and historically significant region in West Africa that has long supported dense human settlement, agriculture, and trade along the course of the Niger River.
  • C. Athi River basin
    The Athi River basin is a major drainage basin in Kenya that collects waters from rivers such as the Nairobi River and ultimately feeds into the Indian Ocean.
  • D. Niger River
    The Niger River is a major West African river that flows in a great arc through countries including Guinea, Mali, Niger, and Nigeria before emptying into the Atlantic Ocean.
  • E. Nile Basin
    The Nile Basin is the extensive drainage region of the Nile River, spanning multiple countries in northeastern Africa and supporting diverse ecosystems and large human populations dependent on its water resources.
  • 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_69e0b518b8948190ad69cf9a8784d397 elicitation completed
NER batch_69e75dca66ac8190a5f0a372a9bc25a7 ner completed
Created at: April 16, 2026, 4:22 p.m.