Triple

T10931079
Position Surface form Disambiguated ID Type / Status
Subject Meycauayan River E258206 entity
Predicate partOf P40 FINISHED
Object Meycauayan–Marilao–Obando River System
The Meycauayan–Marilao–Obando River System is a heavily industrialized and pollution-impacted river network in Bulacan, Philippines, that drains into Manila Bay and has been identified as one of the country’s most environmentally critical waterways.
 E258206 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: Meycauayan–Marilao–Obando River System | Statement: [Meycauayan River, partOf, Meycauayan–Marilao–Obando River System]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Meycauayan–Marilao–Obando River System
Context triple: [Meycauayan River, partOf, Meycauayan–Marilao–Obando River System]
  • A. Meycauayan River
    Meycauayan River is a heavily polluted river in Bulacan, Philippines, known for flowing through industrial and residential areas before emptying into Manila Bay.
  • B. Tarlac River
    Tarlac River is a significant river in the Philippine province of Tarlac that drains agricultural plains before joining the larger Agno River system.
  • C. Bocaue River
    Bocaue River is a waterway in the municipality of Bocaue in Bulacan, Philippines, known locally for its role in transportation, livelihood, and community activities.
  • D. Talisay River
    Talisay River is a waterway located in the province of Bataan in the Philippines.
  • E. Magat River
    Magat River is a major river in the northern Philippines known for the Magat Dam, one of the country’s largest hydroelectric and irrigation projects.
  • 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: Meycauayan–Marilao–Obando River System
Triple: [Meycauayan River, partOf, Meycauayan–Marilao–Obando River System]
Generated description
The Meycauayan–Marilao–Obando River System is a heavily industrialized and pollution-impacted river network in Bulacan, Philippines, that drains into Manila Bay and has been identified as one of the country’s most environmentally critical waterways.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Meycauayan–Marilao–Obando River System
Target entity description: The Meycauayan–Marilao–Obando River System is a heavily industrialized and pollution-impacted river network in Bulacan, Philippines, that drains into Manila Bay and has been identified as one of the country’s most environmentally critical waterways.
  • A. Meycauayan River chosen
    Meycauayan River is a heavily polluted river in Bulacan, Philippines, known for flowing through industrial and residential areas before emptying into Manila Bay.
  • B. Tarlac River
    Tarlac River is a significant river in the Philippine province of Tarlac that drains agricultural plains before joining the larger Agno River system.
  • C. Bocaue River
    Bocaue River is a waterway in the municipality of Bocaue in Bulacan, Philippines, known locally for its role in transportation, livelihood, and community activities.
  • D. Talisay River
    Talisay River is a waterway located in the province of Bataan in the Philippines.
  • E. Magat River
    Magat River is a major river in the northern Philippines known for the Magat Dam, one of the country’s largest hydroelectric and irrigation projects.
  • F. None of above.

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_69d6aa8769b4819082bfe5e61b9017f0 completed April 8, 2026, 7:20 p.m.
NER Named-entity recognition batch_69d770a062f481908beb76c6dbaeb6a6 completed April 9, 2026, 9:25 a.m.
NED1 Entity disambiguation (via context triple) batch_69e2175711d4819088f93bdf64ba4d3f completed April 17, 2026, 11:19 a.m.
NEDg Description generation batch_69e21e54e22881908726f088643edfd2 completed April 17, 2026, 11:49 a.m.
NED2 Entity disambiguation (via description) batch_69e21f1134d0819082fcc735da61d347 completed April 17, 2026, 11:52 a.m.
Created at: April 8, 2026, 9:23 p.m.