Triple

T9433202
Position Surface form Disambiguated ID Type / Status
Subject Lualaba River E227434 entity
Predicate tributary P415 FINISHED
Object Lusangi River
The Lusangi River is a lesser-known river in the Democratic Republic of the Congo that feeds into the major central African waterway, the Lualaba River.
 E808243 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: Lusangi River | Statement: [Lualaba River, tributary, Lusangi River]

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: Lusangi River
Context triple: [Lualaba River, tributary, Lusangi River]
  • A. Ulanga River
    The Ulanga River is a fictional East African waterway famously depicted as the treacherous river route navigated in C.S. Forester’s novel and the classic film "The African Queen."
  • B. Ivindo River
    The Ivindo River is a major river in Gabon known for its powerful waterfalls, rich biodiversity, and role as a key waterway through remote rainforest regions.
  • C. Rwindi River
    The Rwindi River is a river in the eastern Democratic Republic of the Congo that flows through Virunga National Park before emptying into Lake Edward.
  • D. Ruganzu River
    Ruganzu River is a waterway in Rwanda that flows through the capital city, Kigali.
  • E. Nyamugasani River
    Nyamugasani River is a river in the African Great Lakes region that serves as one of the tributaries feeding into Lake Edward.
  • 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: Lusangi River
Target entity description: The Lusangi River is a lesser-known river in the Democratic Republic of the Congo that feeds into the major central African waterway, the Lualaba River.
  • A. Ulanga River
    The Ulanga River is a fictional East African waterway famously depicted as the treacherous river route navigated in C.S. Forester’s novel and the classic film "The African Queen."
  • B. Ivindo River
    The Ivindo River is a major river in Gabon known for its powerful waterfalls, rich biodiversity, and role as a key waterway through remote rainforest regions.
  • C. Rwindi River
    The Rwindi River is a river in the eastern Democratic Republic of the Congo that flows through Virunga National Park before emptying into Lake Edward.
  • D. Ruganzu River
    Ruganzu River is a waterway in Rwanda that flows through the capital city, Kigali.
  • E. Nyamugasani River
    Nyamugasani River is a river in the African Great Lakes region that serves as one of the tributaries feeding into Lake Edward.
  • 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: Lusangi River
Triple: [Lualaba River, tributary, Lusangi River]
Generated description
The Lusangi River is a lesser-known river in the Democratic Republic of the Congo that feeds into the major central African waterway, the Lualaba River.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69ca8437a7ac81908651de48f2d2141d elicitation completed
NER batch_69cd7e61a114819081fc4a2ad39c96ba ner completed
NED1 batch_69d1611c908c8190aea6768e5659c3ca ned_source_triple completed
NED2 batch_69d162fc597081909a57f842e41b1ad4 ned_description completed
NEDg batch_69d161c432b08190ba848159cc26a00c nedg completed
Created at: March 30, 2026, 7:49 p.m.