Triple

T1598982
Position Surface form Disambiguated ID Type / Status
Subject District of Columbia Water and Sewer Authority E34347 entity
Predicate operates P24 FINISHED
Object Blue Plains Advanced Wastewater Treatment Plant
The Blue Plains Advanced Wastewater Treatment Plant is a major wastewater treatment facility in Washington, D.C., recognized as one of the largest and most advanced of its kind in the world.
 E180619 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: Blue Plains Advanced Wastewater Treatment Plant | Statement: [District of Columbia Water and Sewer Authority, operates, Blue Plains Advanced Wastewater Treatment Plant]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Blue Plains Advanced Wastewater Treatment Plant
Context triple: [District of Columbia Water and Sewer Authority, operates, Blue Plains Advanced Wastewater Treatment Plant]
  • A. Deer Island Wastewater Treatment Plant
    Deer Island Wastewater Treatment Plant is a major sewage treatment facility in Boston Harbor that serves the Greater Boston area and plays a key role in improving the region’s water quality.
  • B. Tracy Pumping Plant
    Tracy Pumping Plant is a major water pumping facility in California that lifts and conveys water from the Sacramento–San Joaquin Delta into the Central Valley Project’s distribution system.
  • C. 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.
  • D. Croton Water Filtration Plant
    The Croton Water Filtration Plant is a major underground water treatment facility in New York City that filters and improves drinking water drawn from the Croton water supply system.
  • E. Capitol Power Plant
    The Capitol Power Plant is a historic facility in Washington, D.C. that provides heating and cooling to the U.S. Capitol complex.
  • 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: Blue Plains Advanced Wastewater Treatment Plant
Triple: [District of Columbia Water and Sewer Authority, operates, Blue Plains Advanced Wastewater Treatment Plant]
Generated description
The Blue Plains Advanced Wastewater Treatment Plant is a major wastewater treatment facility in Washington, D.C., recognized as one of the largest and most advanced of its kind in the world.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Blue Plains Advanced Wastewater Treatment Plant
Target entity description: The Blue Plains Advanced Wastewater Treatment Plant is a major wastewater treatment facility in Washington, D.C., recognized as one of the largest and most advanced of its kind in the world.
  • A. Deer Island Wastewater Treatment Plant
    Deer Island Wastewater Treatment Plant is a major sewage treatment facility in Boston Harbor that serves the Greater Boston area and plays a key role in improving the region’s water quality.
  • B. Tracy Pumping Plant
    Tracy Pumping Plant is a major water pumping facility in California that lifts and conveys water from the Sacramento–San Joaquin Delta into the Central Valley Project’s distribution system.
  • C. 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.
  • D. Croton Water Filtration Plant
    The Croton Water Filtration Plant is a major underground water treatment facility in New York City that filters and improves drinking water drawn from the Croton water supply system.
  • E. Capitol Power Plant
    The Capitol Power Plant is a historic facility in Washington, D.C. that provides heating and cooling to the U.S. Capitol complex.
  • 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_69a885fdcb9c819081ce6f0b8cd477dd completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69a90948ddb08190a6fc0597198a7946 completed March 5, 2026, 4:40 a.m.
NED1 Entity disambiguation (via context triple) batch_69ad46aafce08190855f8e0b760ab5ac completed March 8, 2026, 9:51 a.m.
NEDg Description generation batch_69ad47c7108081908e78a24983353212 completed March 8, 2026, 9:56 a.m.
NED2 Entity disambiguation (via description) batch_69ad481e2c788190af51003898fcbe33 completed March 8, 2026, 9:57 a.m.
Created at: March 4, 2026, 7:27 p.m.