Triple

T6038050
Position Surface form Disambiguated ID Type / Status
Subject Paranaíba River E134470 entity
Predicate hasTributary P415 FINISHED
Object São Marcos River
The São Marcos River is a watercourse in central Brazil that serves as a significant tributary within the Paraná River basin, contributing to regional agriculture and hydroelectric generation.
 E602821 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: São Marcos River | Statement: [Paranaíba River, hasTributary, São Marcos 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: São Marcos River
Context triple: [Paranaíba River, hasTributary, São Marcos River]
  • A. Louros River
    The Louros River is a significant waterway in northwestern Greece, known for its clear springs, scenic course through Epirus, and ecological importance as a habitat for diverse flora and fauna.
  • B. Bensafrim River
    The Bensafrim River is a watercourse in the Algarve region of southern Portugal that flows past the historic city of Lagos before reaching the Atlantic Ocean.
  • C. Madeira River
    The Madeira River is one of the largest and most significant rivers in South America, flowing through Bolivia and Brazil and playing a key role in the Amazon Basin’s ecology, transport, and hydroelectric power generation.
  • D. Acre River
    The Acre River is a major tributary of the Purus River in western Amazonia, flowing through Peru, Bolivia, and Brazil and serving as an important waterway for the surrounding rainforest regions.
  • E. Sousa River
    The Sousa River is a significant river in northern Portugal that feeds into the Douro River and contributes to its drainage basin.
  • 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: São Marcos River
Target entity description: The São Marcos River is a watercourse in central Brazil that serves as a significant tributary within the Paraná River basin, contributing to regional agriculture and hydroelectric generation.
  • A. Louros River
    The Louros River is a significant waterway in northwestern Greece, known for its clear springs, scenic course through Epirus, and ecological importance as a habitat for diverse flora and fauna.
  • B. Bensafrim River
    The Bensafrim River is a watercourse in the Algarve region of southern Portugal that flows past the historic city of Lagos before reaching the Atlantic Ocean.
  • C. Madeira River
    The Madeira River is one of the largest and most significant rivers in South America, flowing through Bolivia and Brazil and playing a key role in the Amazon Basin’s ecology, transport, and hydroelectric power generation.
  • D. Acre River
    The Acre River is a major tributary of the Purus River in western Amazonia, flowing through Peru, Bolivia, and Brazil and serving as an important waterway for the surrounding rainforest regions.
  • E. Sousa River
    The Sousa River is a significant river in northern Portugal that feeds into the Douro River and contributes to its drainage basin.
  • 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: São Marcos River
Triple: [Paranaíba River, hasTributary, São Marcos River]
Generated description
The São Marcos River is a watercourse in central Brazil that serves as a significant tributary within the Paraná River basin, contributing to regional agriculture and hydroelectric generation.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69c00875db5c819099dd5bb833ec43c2 elicitation completed
NER batch_69c056ccac948190a27547878d4db8e4 ner completed
NED1 batch_69c6cae2c7f4819096354202532ae488 ned_source_triple completed
NED2 batch_69c6d2879870819087a38ba8c5f61fe8 ned_description completed
NEDg batch_69c6cfcdb0c881909a1e36c863dbe813 nedg completed
Created at: March 22, 2026, 4:08 p.m.