Triple

T9560147
Position Surface form Disambiguated ID Type / Status
Subject Three Mile Island Nuclear Generating Station E230650 entity
Predicate previousOperator P97 FINISHED
Object Metropolitan Edison Company
Metropolitan Edison Company is a regional electric utility that formerly operated the Three Mile Island nuclear power plant in Pennsylvania.
E807777 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: Metropolitan Edison Company | Statement: [Three Mile Island Nuclear Generating Station, previousOperator, Metropolitan Edison Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metropolitan Edison Company
Context triple: [Three Mile Island Nuclear Generating Station, previousOperator, Metropolitan Edison Company]
  • A. Buffalo General Electric Company
    Buffalo General Electric Company was a regional electric utility based in Buffalo, New York, that played a key role in the early development and distribution of electrical power in the area.
  • B. PSEG Power
    PSEG Power is a major U.S. energy generation company that operates as the power production subsidiary of Public Service Enterprise Group, supplying electricity through a portfolio of power plants.
  • C. Continental Edison Company
    Continental Edison Company was an early electrical engineering firm associated with Thomas Edison that employed pioneering inventor Nikola Tesla during his early career.
  • D. Edison Illuminating Company
    Edison Illuminating Company was one of the earliest electric utility companies in the United States, established by Thomas Edison to generate and distribute electric power for lighting and other uses.
  • E. New York Power Authority
    The New York Power Authority is a New York State public power organization that generates and transmits electricity and manages key infrastructure assets across the state.
  • 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: Metropolitan Edison Company
Triple: [Three Mile Island Nuclear Generating Station, previousOperator, Metropolitan Edison Company]
Generated description
Metropolitan Edison Company is a regional electric utility that formerly operated the Three Mile Island nuclear power plant in Pennsylvania.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Metropolitan Edison Company
Target entity description: Metropolitan Edison Company is a regional electric utility that formerly operated the Three Mile Island nuclear power plant in Pennsylvania.
  • A. Buffalo General Electric Company
    Buffalo General Electric Company was a regional electric utility based in Buffalo, New York, that played a key role in the early development and distribution of electrical power in the area.
  • B. PSEG Power
    PSEG Power is a major U.S. energy generation company that operates as the power production subsidiary of Public Service Enterprise Group, supplying electricity through a portfolio of power plants.
  • C. Continental Edison Company
    Continental Edison Company was an early electrical engineering firm associated with Thomas Edison that employed pioneering inventor Nikola Tesla during his early career.
  • D. Edison Illuminating Company
    Edison Illuminating Company was one of the earliest electric utility companies in the United States, established by Thomas Edison to generate and distribute electric power for lighting and other uses.
  • E. New York Power Authority
    The New York Power Authority is a New York State public power organization that generates and transmits electricity and manages key infrastructure assets across the state.
  • 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_69ca847e53a88190a60eed7e02257f10 completed March 30, 2026, 2:11 p.m.
NER Named-entity recognition batch_69cd994bde0c8190afcba5cb8fa8b984 completed April 1, 2026, 10:16 p.m.
NED1 Entity disambiguation (via context triple) batch_69d1529b4974819096e26153c60bf05c completed April 4, 2026, 6:04 p.m.
NEDg Description generation batch_69d1567f587c8190898d261ce7db4df0 completed April 4, 2026, 6:20 p.m.
NED2 Entity disambiguation (via description) batch_69d156f3f3e48190b5b31cc28cfd703a completed April 4, 2026, 6:22 p.m.
Created at: March 30, 2026, 8:03 p.m.