Triple

T5018108
Position Surface form Disambiguated ID Type / Status
Subject Los Gatos Mountains E112781 entity
Predicate near P350 FINISHED
Object Lexington Reservoir
Lexington Reservoir is a man-made lake and popular recreation area in Santa Clara County, California, used for water supply, fishing, and outdoor activities.
 E513046 NE FINISHED

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: Lexington Reservoir | Statement: [Los Gatos Mountains, near, Lexington Reservoir]

Disambiguation candidates (2 decisions)

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: Lexington Reservoir
Context triple: [Los Gatos Mountains, near, Lexington Reservoir]
  • A. Lafayette Reservoir
    Lafayette Reservoir is a popular man-made lake and recreation area in Lafayette, California, known for its hiking trails, fishing, boating, and scenic picnic spots.
  • B. Croton Reservoir
    Croton Reservoir is a large man-made lake in Westchester County, New York, that serves as a key component of New York City's water supply system.
  • C. Goodwin Reservoir
    Goodwin Reservoir is a man-made water storage lake on the Stanislaus River in California, used primarily for irrigation, water supply, and recreation.
  • D. Greenfield Reservoir
    Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
  • E. Malden Reservoir
    Malden Reservoir is a man-made water body in Massachusetts that serves as a local water supply and recreational resource within the greater Boston area.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Lexington Reservoir
Target entity description: Lexington Reservoir is a man-made lake and popular recreation area in Santa Clara County, California, used for water supply, fishing, and outdoor activities.
  • A. Lafayette Reservoir
    Lafayette Reservoir is a popular man-made lake and recreation area in Lafayette, California, known for its hiking trails, fishing, boating, and scenic picnic spots.
  • B. Croton Reservoir
    Croton Reservoir is a large man-made lake in Westchester County, New York, that serves as a key component of New York City's water supply system.
  • C. Goodwin Reservoir
    Goodwin Reservoir is a man-made water storage lake on the Stanislaus River in California, used primarily for irrigation, water supply, and recreation.
  • D. Greenfield Reservoir
    Greenfield Reservoir is a man-made water reservoir in the Saddleworth area of Greater Manchester, England, forming part of the network of upland reservoirs in the Peak District.
  • E. Malden Reservoir
    Malden Reservoir is a man-made water body in Massachusetts that serves as a local water supply and recreational resource within the greater Boston area.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Lexington Reservoir
Triple: [Los Gatos Mountains, near, Lexington Reservoir]
Generated description
Lexington Reservoir is a man-made lake and popular recreation area in Santa Clara County, California, used for water supply, fishing, and outdoor activities.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69bd4435c2f48190be593158cbfcf8a3 elicitation completed
NER batch_69bd73415e088190802f9bb283262386 ner completed
NED1 batch_69bf219bdd208190990db4b0fa89066a ned_source_triple completed
NED2 batch_69bf226771008190b5edecc05ae9a7eb ned_description completed
NEDg batch_69bf2202acc88190bddeb94d404dd175 nedg completed
Created at: March 20, 2026, 1:35 p.m.