Triple

T2907454
Position Surface form Disambiguated ID Type / Status
Subject Contra Costa Canal E63599 entity
Predicate hasComponent P35 FINISHED
Object Contra Loma Reservoir
Contra Loma Reservoir is a man-made lake and recreational area in Antioch, California, used for water storage, fishing, and outdoor activities.
 E314098 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: Contra Loma Reservoir | Statement: [Contra Costa Canal, hasComponent, Contra Loma Reservoir]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Contra Loma Reservoir
Context triple: [Contra Costa Canal, hasComponent, Contra Loma Reservoir]
  • A. La Paloma Reservoir
    La Paloma Reservoir is a major artificial lake in Chile’s Coquimbo Region, known for supporting irrigation and water supply in the Monte Patria area.
  • B. El Pardo Reservoir
    El Pardo Reservoir is a dammed water body near Madrid, Spain, primarily used for water supply, flood control, and recreation along the Manzanares River.
  • C. San Luis Reservoir
    San Luis Reservoir is a large artificial lake in California that serves as a major water storage facility for irrigation and municipal use in the state’s Central Valley.
  • D. Don Pedro Reservoir
    Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
  • E. Perris Dam
    Perris Dam is a large earthfill embankment dam in Riverside County, California, that forms Lake Perris as part of the state’s major water storage and distribution system.
  • 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: Contra Loma Reservoir
Triple: [Contra Costa Canal, hasComponent, Contra Loma Reservoir]
Generated description
Contra Loma Reservoir is a man-made lake and recreational area in Antioch, California, used for water storage, fishing, and outdoor activities.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Contra Loma Reservoir
Target entity description: Contra Loma Reservoir is a man-made lake and recreational area in Antioch, California, used for water storage, fishing, and outdoor activities.
  • A. La Paloma Reservoir
    La Paloma Reservoir is a major artificial lake in Chile’s Coquimbo Region, known for supporting irrigation and water supply in the Monte Patria area.
  • B. El Pardo Reservoir
    El Pardo Reservoir is a dammed water body near Madrid, Spain, primarily used for water supply, flood control, and recreation along the Manzanares River.
  • C. San Luis Reservoir
    San Luis Reservoir is a large artificial lake in California that serves as a major water storage facility for irrigation and municipal use in the state’s Central Valley.
  • D. Don Pedro Reservoir
    Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
  • E. Perris Dam
    Perris Dam is a large earthfill embankment dam in Riverside County, California, that forms Lake Perris as part of the state’s major water storage and distribution system.
  • 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_69ab4c44ab448190b9411324e8a1fc1d completed March 6, 2026, 9:51 p.m.
NER Named-entity recognition batch_69abe0d0628c81909680af2f0db2ecae completed March 7, 2026, 8:24 a.m.
NED1 Entity disambiguation (via context triple) batch_69b0fc5db4cc8190a2d286959034a544 completed March 11, 2026, 5:23 a.m.
NEDg Description generation batch_69b10079dce48190ae40863f1e74d225 completed March 11, 2026, 5:41 a.m.
NED2 Entity disambiguation (via description) batch_69b100cb6f1481908c9d0d47ab8f9229 completed March 11, 2026, 5:42 a.m.
Created at: March 6, 2026, 10:11 p.m.