Triple

T16793602
Position Surface form Disambiguated ID Type / Status
Subject Massachusetts Bay Outfall Tunnel E408173 entity
Predicate associatedWith P37 FINISHED
Object Massachusetts Water Resources Authority wastewater system E14601 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: Massachusetts Water Resources Authority wastewater system | Statement: [Massachusetts Bay Outfall Tunnel, associatedWith, Massachusetts Water Resources Authority wastewater system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Massachusetts Water Resources Authority wastewater system
Context triple: [Massachusetts Bay Outfall Tunnel, associatedWith, Massachusetts Water Resources Authority wastewater system]
  • A. Middlesex Fells Reservation water system
    The Middlesex Fells Reservation water system is a network of reservoirs and related infrastructure in Massachusetts that historically supplied drinking water and now supports recreation and conservation within the Middlesex Fells Reservation.
  • B. 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.
  • C. Massachusetts Water Resources Authority chosen
    The Massachusetts Water Resources Authority is a public agency responsible for providing wholesale water and sewer services, including drinking water supply and wastewater treatment, to communities in the Greater Boston area.
  • D. 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.
  • E. Metropolitan Water Works system
    The Metropolitan Water Works system is a historic public water supply network that provided drinking water to the Boston metropolitan area through an extensive system of reservoirs, aqueducts, and related infrastructure.
  • 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_69d88393905081908d00a86b99996ac8 completed April 10, 2026, 4:58 a.m.
NER Named-entity recognition batch_69e3b2a7817c8190a53d0cfb5ef66a71 completed April 18, 2026, 4:34 p.m.
NED1 Entity disambiguation (via context triple) batch_6a00ab0e1e9c8190bb2ef0825b25f6e5 completed May 10, 2026, 3:58 p.m.
Created at: April 10, 2026, 5:22 a.m.