Triple

T963455
Position Surface form Disambiguated ID Type / Status
Subject Stephen D. Bechtel Sr. E20784 entity
Predicate notableProject P4 FINISHED
Object Boulder Canyon Project (through Bechtel involvement)
The Boulder Canyon Project is the major U.S. public works initiative that led to the construction of Hoover Dam on the Colorado River, a landmark engineering feat in which Bechtel played a key contracting role.
E113190 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: Boulder Canyon Project (through Bechtel involvement) | Statement: [Stephen D. Bechtel Sr., notableProject, Boulder Canyon Project (through Bechtel involvement)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Boulder Canyon Project (through Bechtel involvement)
Context triple: [Stephen D. Bechtel Sr., notableProject, Boulder Canyon Project (through Bechtel involvement)]
  • A. Columbia Basin Project
    The Columbia Basin Project is a large-scale irrigation and hydroelectric development in central Washington State that distributes water and power from the Grand Coulee Dam to support agriculture, industry, and communities across the region.
  • B. State Water Project
    The State Water Project is a massive California water storage and delivery system that transports water from northern sources to agricultural, urban, and industrial users across the state, including the Central Valley.
  • C. Central Valley Project
    The Central Valley Project is a large-scale federal water management system in California that stores and delivers water for agriculture, cities, and environmental uses across the Central Valley.
  • D. Bonneville Dam
    Bonneville Dam is a major hydroelectric and navigation dam on the Columbia River in the Pacific Northwest, known for power generation, fish ladders, and its role in regional river management.
  • E. Davis Dam
    Davis Dam is a concrete gravity-arch dam on the Colorado River between Nevada and Arizona that forms Lake Mohave and helps regulate water releases from Hoover Dam.
  • 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: Boulder Canyon Project (through Bechtel involvement)
Triple: [Stephen D. Bechtel Sr., notableProject, Boulder Canyon Project (through Bechtel involvement)]
Generated description
The Boulder Canyon Project is the major U.S. public works initiative that led to the construction of Hoover Dam on the Colorado River, a landmark engineering feat in which Bechtel played a key contracting role.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Boulder Canyon Project (through Bechtel involvement)
Target entity description: The Boulder Canyon Project is the major U.S. public works initiative that led to the construction of Hoover Dam on the Colorado River, a landmark engineering feat in which Bechtel played a key contracting role.
  • A. Columbia Basin Project
    The Columbia Basin Project is a large-scale irrigation and hydroelectric development in central Washington State that distributes water and power from the Grand Coulee Dam to support agriculture, industry, and communities across the region.
  • B. State Water Project
    The State Water Project is a massive California water storage and delivery system that transports water from northern sources to agricultural, urban, and industrial users across the state, including the Central Valley.
  • C. Central Valley Project
    The Central Valley Project is a large-scale federal water management system in California that stores and delivers water for agriculture, cities, and environmental uses across the Central Valley.
  • D. Bonneville Dam
    Bonneville Dam is a major hydroelectric and navigation dam on the Columbia River in the Pacific Northwest, known for power generation, fish ladders, and its role in regional river management.
  • E. Davis Dam
    Davis Dam is a concrete gravity-arch dam on the Colorado River between Nevada and Arizona that forms Lake Mohave and helps regulate water releases from Hoover Dam.
  • 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_69a493b21f2881908132dcf45dcd2f36 completed March 1, 2026, 7:29 p.m.
NER Named-entity recognition batch_69a4b416cf4c8190bd685227db25fb53 completed March 1, 2026, 9:48 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac11a6107481909b152291a73958d3 completed March 7, 2026, 11:53 a.m.
NEDg Description generation batch_69ac12c5978481909be2d6e1ce85acd5 completed March 7, 2026, 11:57 a.m.
NED2 Entity disambiguation (via description) batch_69ac132f09448190b5f789f90328f81f completed March 7, 2026, 11:59 a.m.
Created at: March 1, 2026, 7:40 p.m.