Triple

T20209185

Position	Surface form	Disambiguated ID	Type / Status
Subject	Río Grijalva	`E493440`	entity
Predicate	formsReservoir	`P11309`	FINISHED
Object	Presa La Angostura	`—`	NE NERFINISHED

How this triple was built (3 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini

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: Presa La Angostura | Statement: [Río Grijalva, formsReservoir, Presa La Angostura]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Presa La Angostura
Context triple: [Río Grijalva, formsReservoir, Presa La Angostura]

A. Presa Palo Bolero
Presa Palo Bolero is a reservoir located in the municipality of Puente de Ixtla in the Mexican state of Morelos, used primarily for irrigation and local water management.
B. Presa Miguel Alemán
Presa Miguel Alemán is a large hydroelectric and irrigation dam and reservoir located in the state of Oaxaca, Mexico.
C. Embalse de Guri
Embalse de Guri is one of the world’s largest artificial lakes, formed by the Guri Dam on the Caroní River in Venezuela and serving as a major source of hydroelectric power for the country.
D. Presa Lázaro Cárdenas
Presa Lázaro Cárdenas is a major Mexican dam and reservoir on the Nazas River, built primarily for irrigation, flood control, and regional water supply.
E. Presa El Rodeo
Presa El Rodeo is a reservoir located in the municipality of Puente de Ixtla in the Mexican state of Morelos, used primarily for irrigation, fishing, and local recreation.
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: Presa La Angostura
Target entity description: Presa La Angostura is a major hydroelectric reservoir and dam on the Grijalva River in Chiapas, Mexico, known for its significant role in the country’s power generation and water management.

A. Presa Palo Bolero
Presa Palo Bolero is a reservoir located in the municipality of Puente de Ixtla in the Mexican state of Morelos, used primarily for irrigation and local water management.
B. Presa Miguel Alemán
Presa Miguel Alemán is a large hydroelectric and irrigation dam and reservoir located in the state of Oaxaca, Mexico.
C. Embalse de Guri
Embalse de Guri is one of the world’s largest artificial lakes, formed by the Guri Dam on the Caroní River in Venezuela and serving as a major source of hydroelectric power for the country.
D. Presa Lázaro Cárdenas
Presa Lázaro Cárdenas is a major Mexican dam and reservoir on the Nazas River, built primarily for irrigation, flood control, and regional water supply.
E. Presa El Rodeo
Presa El Rodeo is a reservoir located in the municipality of Puente de Ixtla in the Mexican state of Morelos, used primarily for irrigation, fishing, and local recreation.
F. None of above. chosen

Provenance (2 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step	Stage	Batch ID	Status	When
creating	Elicitation	`batch_69da6269614c8190bb40475d9d477358`	completed	April 11, 2026, 3:02 p.m.
NER	Named-entity recognition	`batch_69e66d94999c8190b67051cb0acea213`	completed	April 20, 2026, 6:16 p.m.

Created at: April 11, 2026, 11:38 p.m.