Triple

T7449890
Position Surface form Disambiguated ID Type / Status
Subject Chestnut Hill Reservoir E171979 entity
Predicate hasNearbyStructure P231 FINISHED
Object Chestnut Hill Pumping Station
Chestnut Hill Pumping Station is a historic waterworks facility in Boston, Massachusetts, notable for its role in the city’s 19th- and early 20th-century public water supply system and its distinctive Romanesque Revival architecture.
E665957 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: Chestnut Hill Pumping Station | Statement: [Chestnut Hill Reservoir, hasNearbyStructure, Chestnut Hill Pumping Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chestnut Hill Pumping Station
Context triple: [Chestnut Hill Reservoir, hasNearbyStructure, Chestnut Hill Pumping Station]
  • A. Harvey O. Banks Pumping Plant
    The Harvey O. Banks Pumping Plant is a major water pumping facility in California that serves as a key intake and distribution hub for the State Water Project.
  • B. Chicago Avenue Pumping Station
    The Chicago Avenue Pumping Station is a historic 19th-century waterworks building in Chicago, known for its distinctive Gothic Revival architecture and survival of the Great Chicago Fire.
  • C. Cruquius Pumping Station
    Cruquius Pumping Station is a historic 19th-century Dutch steam-powered pumping station, now a museum, renowned for its role in draining the Haarlemmermeer lake and showcasing monumental industrial engineering.
  • D. Jones Pumping Plant
    Jones Pumping Plant is a major water pumping facility in California’s Central Valley that lifts and conveys water from the Sacramento-San Joaquin Delta into the Central Valley Project’s distribution system.
  • E. Edmonston Pumping Plant
    Edmonston Pumping Plant is a major California water infrastructure facility that lifts water over the Tehachapi Mountains, enabling its delivery from Northern to Southern California.
  • 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: Chestnut Hill Pumping Station
Triple: [Chestnut Hill Reservoir, hasNearbyStructure, Chestnut Hill Pumping Station]
Generated description
Chestnut Hill Pumping Station is a historic waterworks facility in Boston, Massachusetts, notable for its role in the city’s 19th- and early 20th-century public water supply system and its distinctive Romanesque Revival architecture.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chestnut Hill Pumping Station
Target entity description: Chestnut Hill Pumping Station is a historic waterworks facility in Boston, Massachusetts, notable for its role in the city’s 19th- and early 20th-century public water supply system and its distinctive Romanesque Revival architecture.
  • A. Harvey O. Banks Pumping Plant
    The Harvey O. Banks Pumping Plant is a major water pumping facility in California that serves as a key intake and distribution hub for the State Water Project.
  • B. Chicago Avenue Pumping Station
    The Chicago Avenue Pumping Station is a historic 19th-century waterworks building in Chicago, known for its distinctive Gothic Revival architecture and survival of the Great Chicago Fire.
  • C. Cruquius Pumping Station
    Cruquius Pumping Station is a historic 19th-century Dutch steam-powered pumping station, now a museum, renowned for its role in draining the Haarlemmermeer lake and showcasing monumental industrial engineering.
  • D. Jones Pumping Plant
    Jones Pumping Plant is a major water pumping facility in California’s Central Valley that lifts and conveys water from the Sacramento-San Joaquin Delta into the Central Valley Project’s distribution system.
  • E. Edmonston Pumping Plant
    Edmonston Pumping Plant is a major California water infrastructure facility that lifts water over the Tehachapi Mountains, enabling its delivery from Northern to Southern California.
  • 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_69c68a66554c8190add75c65942c0317 completed March 27, 2026, 1:47 p.m.
NER Named-entity recognition batch_69c6f38af3fc8190bc5c57ca89d976bc completed March 27, 2026, 9:15 p.m.
NED1 Entity disambiguation (via context triple) batch_69c827b0e9848190b28ff10b12b10a33 completed March 28, 2026, 7:10 p.m.
NEDg Description generation batch_69c8299bb8c08190a5a78b0c1a8cc0fb completed March 28, 2026, 7:18 p.m.
NED2 Entity disambiguation (via description) batch_69c82ad4384481909616bdfd02624a48 completed March 28, 2026, 7:24 p.m.
Created at: March 27, 2026, 3:14 p.m.