Triple

T20839269
Position Surface form Disambiguated ID Type / Status
Subject Lexington Reservoir E513046 entity
Predicate partOf P40 FINISHED
Object Santa Clara Valley Water District reservoir system — NE NERFINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Santa Clara Valley Water District reservoir system | Statement: [Lexington Reservoir, partOf, Santa Clara Valley Water District reservoir system]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Santa Clara Valley Water District reservoir system
Context triple: [Lexington Reservoir, partOf, Santa Clara Valley Water District reservoir system]
  • A. San Francisco Peninsula reservoir system
    The San Francisco Peninsula reservoir system is a network of man-made lakes and related infrastructure that stores and supplies drinking water to the San Francisco Bay Area, particularly the city of San Francisco and nearby communities.
  • B. Santa Clara County flood-control system
    The Santa Clara County flood-control system is a network of engineered channels, creeks, and infrastructure designed to manage stormwater and reduce flooding risks throughout Santa Clara County, California.
  • C. Stevens Creek Reservoir
    Stevens Creek Reservoir is an artificial lake in Santa Clara County, California, used for water storage and recreation such as fishing, boating, and hiking.
  • D. Santa Clara Valley Water District chosen
    Santa Clara Valley Water District is the public agency responsible for managing water supply, flood protection, and stream stewardship for Santa Clara County in California’s Silicon Valley.
  • E. Briones Reservoir
    Briones Reservoir is a man-made lake in Contra Costa County, California, used for water supply and recreational activities such as rowing.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e0b4cf62a88190bbf92351e9e57259 elicitation completed
NER batch_69e6c34a60848190b33078172675f8d7 ner completed
Created at: April 16, 2026, 12:42 p.m.