Triple

T5357775
Position Surface form Disambiguated ID Type / Status
Subject La Mesa Watershed E102741 entity
Predicate partOf P40 FINISHED
Object Angat–Ipo–La Mesa water system
The Angat–Ipo–La Mesa water system is a major integrated water supply network in the Philippines that sources, stores, and conveys water from the Angat and Ipo dams to the La Mesa watershed and treatment facilities serving Metro Manila.
 E514273 NE FINISHED

How this triple was built (4 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: Angat–Ipo–La Mesa water system | Statement: [La Mesa Watershed, partOf, Angat–Ipo–La Mesa water system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Angat–Ipo–La Mesa water system
Context triple: [La Mesa Watershed, partOf, Angat–Ipo–La Mesa water system]
  • A. Ambuklao Dam
    Ambuklao Dam is a major hydroelectric and flood-control dam in Benguet, Philippines, known as one of the country’s earliest large-scale hydropower projects.
  • B. Metropolitan Waterworks and Sewerage System
    The Metropolitan Waterworks and Sewerage System is a Philippine government agency responsible for providing and regulating water supply and sewerage services in Metro Manila and nearby areas.
  • C. Metropolitan Water Works system
    The Metropolitan Water Works system is a historic public water supply network that provided drinking water to the Boston metropolitan area through an extensive system of reservoirs, aqueducts, and related infrastructure.
  • D. Malpaso Dam
    Malpaso Dam is a major hydroelectric dam in Chiapas, Mexico, forming one of the country’s largest reservoirs and playing a key role in national power generation and flood control.
  • E. Marikina River
    Marikina River is a major waterway in Metro Manila, Philippines, known for flowing through the city of Marikina and frequently causing floods in surrounding urban areas.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
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: Angat–Ipo–La Mesa water system
Triple: [La Mesa Watershed, partOf, Angat–Ipo–La Mesa water system]
Generated description
The Angat–Ipo–La Mesa water system is a major integrated water supply network in the Philippines that sources, stores, and conveys water from the Angat and Ipo dams to the La Mesa watershed and treatment facilities serving Metro Manila.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Angat–Ipo–La Mesa water system
Target entity description: The Angat–Ipo–La Mesa water system is a major integrated water supply network in the Philippines that sources, stores, and conveys water from the Angat and Ipo dams to the La Mesa watershed and treatment facilities serving Metro Manila.
  • A. Ambuklao Dam
    Ambuklao Dam is a major hydroelectric and flood-control dam in Benguet, Philippines, known as one of the country’s earliest large-scale hydropower projects.
  • B. Metropolitan Waterworks and Sewerage System
    The Metropolitan Waterworks and Sewerage System is a Philippine government agency responsible for providing and regulating water supply and sewerage services in Metro Manila and nearby areas.
  • C. Metropolitan Water Works system
    The Metropolitan Water Works system is a historic public water supply network that provided drinking water to the Boston metropolitan area through an extensive system of reservoirs, aqueducts, and related infrastructure.
  • D. Malpaso Dam
    Malpaso Dam is a major hydroelectric dam in Chiapas, Mexico, forming one of the country’s largest reservoirs and playing a key role in national power generation and flood control.
  • E. Marikina River
    Marikina River is a major waterway in Metro Manila, Philippines, known for flowing through the city of Marikina and frequently causing floods in surrounding urban areas.
  • F. None of above. chosen

Provenance (5 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_69bd43d8f7248190b64c140734b5c9a8 completed March 20, 2026, 12:55 p.m.
NER Named-entity recognition batch_69bd863099b081909d20f7014b98de5a completed March 20, 2026, 5:38 p.m.
NED1 Entity disambiguation (via context triple) batch_69bf21e6762481909278935a4eeee177 completed March 21, 2026, 10:55 p.m.
NEDg Description generation batch_69bf228956d481909e9f3c11f4597cce completed March 21, 2026, 10:58 p.m.
NED2 Entity disambiguation (via description) batch_69bf230b571481909f76ada72d94c8d8 completed March 21, 2026, 11 p.m.
Created at: March 20, 2026, 2:01 p.m.