Triple

T16727536
Position Surface form Disambiguated ID Type / Status
Subject Chicago Area Waterway System E406500 entity
Predicate operator P179 FINISHED
Object Metropolitan Water Reclamation District of Greater Chicago E83512 NE FINISHED

How this triple was built (2 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: Metropolitan Water Reclamation District of Greater Chicago | Statement: [Chicago Area Waterway System, operator, Metropolitan Water Reclamation District of Greater Chicago]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Metropolitan Water Reclamation District of Greater Chicago
Context triple: [Chicago Area Waterway System, operator, Metropolitan Water Reclamation District of Greater Chicago]
  • A. Metropolitan Water Reclamation District of Greater Chicago chosen
    The Metropolitan Water Reclamation District of Greater Chicago is a special-purpose governmental agency responsible for wastewater treatment, stormwater management, and flood control across the Chicago metropolitan area.
  • B. Milwaukee Metropolitan Sewerage District
    The Milwaukee Metropolitan Sewerage District is a regional government agency responsible for wastewater treatment, flood management, and water quality protection in the Milwaukee, Wisconsin area.
  • C. Palatine Park District
    Palatine Park District is the local governmental agency that manages parks, recreational facilities, and community programs for residents of Palatine, Illinois.
  • D. Detroit Water and Sewerage Department
    The Detroit Water and Sewerage Department is the municipal agency responsible for providing water and wastewater services to Detroit and several surrounding communities.
  • E. Chicago waterworks
    Chicago waterworks was a 19th-century municipal water supply facility in Chicago that became historically notable after being largely destroyed in the Great Chicago Fire of 1871.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69d8838f242881908abd8bc138795886 completed April 10, 2026, 4:58 a.m.
NER Named-entity recognition batch_69e38748f538819097de1fdee9b42f34 completed April 18, 2026, 1:29 p.m.
NED1 Entity disambiguation (via context triple) batch_6a009d4627b8819087bbd3ae85a67dfc completed May 10, 2026, 2:59 p.m.
Created at: April 10, 2026, 5:20 a.m.