Triple

T16238474

Position	Surface form	Disambiguated ID	Type / Status
Subject	Combustion Engineering	`E394177`	entity
Predicate	suppliedTo	`P17063`	FINISHED
Object	San Onofre Nuclear Generating Station Unit 2 San Onofre Nuclear Generating Station Unit 2 was a pressurized water reactor unit at the San Onofre nuclear power plant in California, known for its coastal location between Los Angeles and San Diego and its eventual permanent shutdown following equipment issues.	`E1202832`	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: San Onofre Nuclear Generating Station Unit 2 | Statement: [Combustion Engineering, suppliedTo, San Onofre Nuclear Generating Station Unit 2]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: San Onofre Nuclear Generating Station Unit 2
Context triple: [Combustion Engineering, suppliedTo, San Onofre Nuclear Generating Station Unit 2]

A. Palo Seco Power Plant
Palo Seco Power Plant is a major thermoelectric generating station in Puerto Rico that supplies electricity to the San Juan metropolitan area and surrounding regions.
B. Ascó Nuclear Power Plant
Ascó Nuclear Power Plant is a major Spanish nuclear power facility located in Catalonia that generates electricity using pressurized water reactors.
C. Castaic Power Plant
Castaic Power Plant is a large pumped-storage hydroelectric facility in Los Angeles County, California, that generates electricity by moving water between Castaic Lake and Pyramid Lake to help balance regional power demand.
D. Hatch Nuclear Power Plant
Hatch Nuclear Power Plant is a commercial nuclear power generating facility in Georgia that supplies electricity to the regional grid as part of Southern Company's energy portfolio.
E. South Texas Project Nuclear Generating Station
The South Texas Project Nuclear Generating Station is a major nuclear power plant complex in Texas that supplies a significant portion of the region’s electricity.
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: San Onofre Nuclear Generating Station Unit 2
Triple: [Combustion Engineering, suppliedTo, San Onofre Nuclear Generating Station Unit 2]

Generated description

San Onofre Nuclear Generating Station Unit 2 was a pressurized water reactor unit at the San Onofre nuclear power plant in California, known for its coastal location between Los Angeles and San Diego and its eventual permanent shutdown following equipment issues.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: San Onofre Nuclear Generating Station Unit 2
Target entity description: San Onofre Nuclear Generating Station Unit 2 was a pressurized water reactor unit at the San Onofre nuclear power plant in California, known for its coastal location between Los Angeles and San Diego and its eventual permanent shutdown following equipment issues.

A. Palo Seco Power Plant
Palo Seco Power Plant is a major thermoelectric generating station in Puerto Rico that supplies electricity to the San Juan metropolitan area and surrounding regions.
B. Ascó Nuclear Power Plant
Ascó Nuclear Power Plant is a major Spanish nuclear power facility located in Catalonia that generates electricity using pressurized water reactors.
C. Castaic Power Plant
Castaic Power Plant is a large pumped-storage hydroelectric facility in Los Angeles County, California, that generates electricity by moving water between Castaic Lake and Pyramid Lake to help balance regional power demand.
D. Hatch Nuclear Power Plant
Hatch Nuclear Power Plant is a commercial nuclear power generating facility in Georgia that supplies electricity to the regional grid as part of Southern Company's energy portfolio.
E. South Texas Project Nuclear Generating Station
The South Texas Project Nuclear Generating Station is a major nuclear power plant complex in Texas that supplies a significant portion of the region’s electricity.
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_69d87f2171208190951025e526947816`	completed	April 10, 2026, 4:40 a.m.
NER	Named-entity recognition	`batch_69e2455c7a3c81909e3b42edf03be43e`	completed	April 17, 2026, 2:36 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a000edaf76c8190acc01f58845e570a`	completed	May 10, 2026, 4:51 a.m.
NEDg	Description generation	`batch_6a0011f7f3fc8190a3a3bf260b391e78`	completed	May 10, 2026, 5:04 a.m.
NED2	Entity disambiguation (via description)	`batch_6a0012e9913481908ee5ada2fce507f4`	completed	May 10, 2026, 5:08 a.m.

Created at: April 10, 2026, 5:04 a.m.