Triple

T326499
Position Surface form Disambiguated ID Type / Status
Subject Croton water supply system E6530 entity
Predicate component P35 FINISHED
Object Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
 E56841 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: Hillview Reservoir | Statement: [Croton water supply system, component, Hillview Reservoir]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Hillview Reservoir
Context triple: [Croton water supply system, component, Hillview Reservoir]
  • A. Amawalk Reservoir
    Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
  • B. Chew Reservoir
    Chew Reservoir is a man-made upland water reservoir in the Peak District area of England, known for its moorland surroundings and role in regional water supply.
  • C. Cross River Reservoir
    Cross River Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
  • D. East Branch Reservoir
    East Branch Reservoir is a man-made water supply reservoir in New York’s Croton Watershed that helps provide drinking water to New York City.
  • E. Middle Branch Reservoir
    Middle Branch Reservoir is a man-made lake in New York’s Croton Watershed that serves as part of the New York City water supply system.
  • 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: Hillview Reservoir
Triple: [Croton water supply system, component, Hillview Reservoir]
Generated description
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Hillview Reservoir
Target entity description: Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
  • A. Amawalk Reservoir
    Amawalk Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
  • B. Chew Reservoir
    Chew Reservoir is a man-made upland water reservoir in the Peak District area of England, known for its moorland surroundings and role in regional water supply.
  • C. Cross River Reservoir
    Cross River Reservoir is a man-made lake in Westchester County, New York, that forms part of New York City's Croton water supply system.
  • D. East Branch Reservoir
    East Branch Reservoir is a man-made water supply reservoir in New York’s Croton Watershed that helps provide drinking water to New York City.
  • E. Middle Branch Reservoir
    Middle Branch Reservoir is a man-made lake in New York’s Croton Watershed that serves as part of the New York City water supply system.
  • 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_69a2e7933d6c8190bb2592ad13286ef2 completed Feb. 28, 2026, 1:03 p.m.
NER Named-entity recognition batch_69a2ea974d8481908c7d84f72a7728b6 completed Feb. 28, 2026, 1:16 p.m.
NED1 Entity disambiguation (via context triple) batch_69a447f722808190874ec3f4692af179 completed March 1, 2026, 2:06 p.m.
NEDg Description generation batch_69a448693f308190990ea9ac33117ffe completed March 1, 2026, 2:08 p.m.
NED2 Entity disambiguation (via description) batch_69a448bd4ff08190aacf6fb8517f3244 completed March 1, 2026, 2:10 p.m.
Created at: Feb. 28, 2026, 1:08 p.m.