Triple

T303306
Position Surface form Disambiguated ID Type / Status
Subject Hoover Dam E6243 entity
Predicate reservoir P11309 FINISHED
Object Lake Mead
Lake Mead is a large man-made reservoir on the Colorado River in the southwestern United States, known for supplying water and hydroelectric power to millions of people in the region.
E40441 NE FINISHED

How this triple was built (5 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: Lake Mead | Statement: [Hoover Dam, reservoir, Lake Mead]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Lake Mead
Context triple: [Hoover Dam, reservoir, Lake Mead]
  • A. Lake Mead National Recreation Area
    Lake Mead National Recreation Area is a vast protected landscape in the American Southwest centered on the reservoirs of the Colorado River, offering desert scenery, water-based recreation, and wildlife habitat.
  • B. Pyramid Lake
    Pyramid Lake is a large desert lake in northwestern Nevada known for its striking pyramid-shaped tufa formations and cultural significance to the Pyramid Lake Paiute Tribe.
  • C. Donner Lake
    Donner Lake is a scenic alpine lake in the Sierra Nevada of California, known for its clear waters, recreational activities, and historical association with the Donner Party.
  • D. Lake Tahoe
    Lake Tahoe is a large, deep, and famously clear freshwater lake in the Sierra Nevada mountains, straddling the border of California and Nevada and serving as a major destination for outdoor recreation and tourism.
  • E. Salton Sea
    The Salton Sea is a large, saline, endorheic lake in the Colorado Desert of Southern California, known for its fluctuating water levels, high salinity, and significant environmental and ecological challenges.
  • 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: Lake Mead
Triple: [Hoover Dam, reservoir, Lake Mead]
Generated description
Lake Mead is a large man-made reservoir on the Colorado River in the southwestern United States, known for supplying water and hydroelectric power to millions of people in the region.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Lake Mead
Target entity description: Lake Mead is a large man-made reservoir on the Colorado River in the southwestern United States, known for supplying water and hydroelectric power to millions of people in the region.
  • A. Lake Mead National Recreation Area
    Lake Mead National Recreation Area is a vast protected landscape in the American Southwest centered on the reservoirs of the Colorado River, offering desert scenery, water-based recreation, and wildlife habitat.
  • B. Pyramid Lake
    Pyramid Lake is a large desert lake in northwestern Nevada known for its striking pyramid-shaped tufa formations and cultural significance to the Pyramid Lake Paiute Tribe.
  • C. Donner Lake
    Donner Lake is a scenic alpine lake in the Sierra Nevada of California, known for its clear waters, recreational activities, and historical association with the Donner Party.
  • D. Lake Tahoe
    Lake Tahoe is a large, deep, and famously clear freshwater lake in the Sierra Nevada mountains, straddling the border of California and Nevada and serving as a major destination for outdoor recreation and tourism.
  • E. Salton Sea
    The Salton Sea is a large, saline, endorheic lake in the Colorado Desert of Southern California, known for its fluctuating water levels, high salinity, and significant environmental and ecological challenges.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: reservoir
Context triple: [Hoover Dam, reservoir, Lake Mead]
  • A. basin
    Indicates a geographic area where surface water drains into a common outlet, such as a river, lake, or ocean.
  • B. drainageBasin
    Indicates the area of land where all precipitation and surface water flow are collected and drained toward a particular river, lake, or other water body.
  • C. basinType
    Indicates the specific kind or classification of a basin associated with an entity (e.g., by form, function, or hydrological role).
  • D. mouthOfTheWatercourse
    Indicates the location where a watercourse ends and flows into a larger body of water.
  • E. tributary
    Indicates that one watercourse flows into and feeds another, contributing its water to a larger stream, river, or lake.
  • F. None of above. chosen

Provenance (7 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_69a2e79230508190b912ecb555aae17e completed Feb. 28, 2026, 1:03 p.m.
NER Named-entity recognition batch_69a2ea2fba548190a5aeb1597dca96bd completed Feb. 28, 2026, 1:14 p.m.
NED1 Entity disambiguation (via context triple) batch_69a3c415f83c8190b95755f23faae026 completed March 1, 2026, 4:44 a.m.
NEDg Description generation batch_69a3c4a50d0c819086ab22f9a46b953a completed March 1, 2026, 4:46 a.m.
NED2 Entity disambiguation (via description) batch_69a3c530f6a48190aeb056a38e417313 completed March 1, 2026, 4:48 a.m.
PD Predicate disambiguation batch_69a2e93c367881908d3f6e2b81d44d7f completed Feb. 28, 2026, 1:10 p.m.
PDg Predicate description generation batch_69a2ea2af1388190b93235602ace679e completed Feb. 28, 2026, 1:14 p.m.
Created at: Feb. 28, 2026, 1:06 p.m.