Triple

T2300424
Position Surface form Disambiguated ID Type / Status
Subject Middlesex Fells Reservation E51717 entity
Predicate hasBodyOfWater P1778 FINISHED
Object Middle Reservoir
Middle Reservoir is a man-made lake within the Middlesex Fells Reservation in Massachusetts, used primarily for water supply and recreation.
E253839 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: Middle Reservoir | Statement: [Middlesex Fells Reservation, hasBodyOfWater, Middle Reservoir]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Middle Reservoir
Context triple: [Middlesex Fells Reservation, hasBodyOfWater, Middle Reservoir]
  • A. 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.
  • B. Yellowtail Reservoir
    Yellowtail Reservoir is a man-made lake on the Bighorn River in Montana, created by Yellowtail Dam and used primarily for water storage, hydroelectric power, and recreation.
  • C. Little River Reservoir
    Little River Reservoir is a man-made lake in Durham County, North Carolina, primarily serving as a municipal water supply and recreational area.
  • D. Greenfield Reservoir
    Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
  • E. 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.
  • 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: Middle Reservoir
Triple: [Middlesex Fells Reservation, hasBodyOfWater, Middle Reservoir]
Generated description
Middle Reservoir is a man-made lake within the Middlesex Fells Reservation in Massachusetts, used primarily for water supply and recreation.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Middle Reservoir
Target entity description: Middle Reservoir is a man-made lake within the Middlesex Fells Reservation in Massachusetts, used primarily for water supply and recreation.
  • A. 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.
  • B. Yellowtail Reservoir
    Yellowtail Reservoir is a man-made lake on the Bighorn River in Montana, created by Yellowtail Dam and used primarily for water storage, hydroelectric power, and recreation.
  • C. Little River Reservoir
    Little River Reservoir is a man-made lake in Durham County, North Carolina, primarily serving as a municipal water supply and recreational area.
  • D. Greenfield Reservoir
    Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
  • E. 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.
  • 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_69a88b0a9f248190bcff941463d8f65a completed March 4, 2026, 7:42 p.m.
NER Named-entity recognition batch_69abc5edc1348190a4d84606b1310711 completed March 7, 2026, 6:30 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae7f2e338881908e09d19f469a59ce completed March 9, 2026, 8:05 a.m.
NEDg Description generation batch_69ae7fd78ee48190990fc7b5034b662b completed March 9, 2026, 8:07 a.m.
NED2 Entity disambiguation (via description) batch_69ae80dadf208190913211329a40b4ee completed March 9, 2026, 8:12 a.m.
Created at: March 4, 2026, 7:49 p.m.