Triple

T19942355
Position Surface form Disambiguated ID Type / Status
Subject John D. Spreckels E479336 entity
Predicate owned P347 FINISHED
Object San Diego Electric Railway Company
The San Diego Electric Railway Company was a historic streetcar and transit system that played a central role in developing and connecting early 20th-century San Diego.
 E1403177 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 Diego Electric Railway Company | Statement: [John D. Spreckels, owned, San Diego Electric Railway Company]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: San Diego Electric Railway Company
Context triple: [John D. Spreckels, owned, San Diego Electric Railway Company]
  • A. Central California Traction Company
    The Central California Traction Company is a regional railroad in California that historically provided interurban electric rail service and later freight operations in the Central Valley.
  • B. Pacific Electric Railway
    The Pacific Electric Railway was a vast early 20th-century interurban electric rail system centered in Los Angeles, famed for its iconic “Red Cars” that once formed one of the largest electric railway networks in the world.
  • C. San Diego Metropolitan Transit System
    The San Diego Metropolitan Transit System is the public transportation agency that operates buses and light rail services throughout the San Diego, California metropolitan area.
  • D. Los Angeles Railway
    Los Angeles Railway was a historic streetcar transit system that operated an extensive network of urban rail lines in Los Angeles during the first half of the 20th century.
  • E. Sacramento Northern Railway
    The Sacramento Northern Railway was an interurban electric railway in Northern California that connected the San Francisco Bay Area with the Sacramento Valley and was later controlled by the Western Pacific Railroad.
  • 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 Diego Electric Railway Company
Triple: [John D. Spreckels, owned, San Diego Electric Railway Company]
Generated description
The San Diego Electric Railway Company was a historic streetcar and transit system that played a central role in developing and connecting early 20th-century San Diego.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: San Diego Electric Railway Company
Target entity description: The San Diego Electric Railway Company was a historic streetcar and transit system that played a central role in developing and connecting early 20th-century San Diego.
  • A. Central California Traction Company
    The Central California Traction Company is a regional railroad in California that historically provided interurban electric rail service and later freight operations in the Central Valley.
  • B. Pacific Electric Railway
    The Pacific Electric Railway was a vast early 20th-century interurban electric rail system centered in Los Angeles, famed for its iconic “Red Cars” that once formed one of the largest electric railway networks in the world.
  • C. San Diego Metropolitan Transit System
    The San Diego Metropolitan Transit System is the public transportation agency that operates buses and light rail services throughout the San Diego, California metropolitan area.
  • D. Los Angeles Railway
    Los Angeles Railway was a historic streetcar transit system that operated an extensive network of urban rail lines in Los Angeles during the first half of the 20th century.
  • E. Sacramento Northern Railway
    The Sacramento Northern Railway was an interurban electric railway in Northern California that connected the San Francisco Bay Area with the Sacramento Valley and was later controlled by the Western Pacific Railroad.
  • 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_69d8e522a17c819095165d4d24939fd8 completed April 10, 2026, 11:55 a.m.
NER Named-entity recognition batch_69e65a63f2e48190ba1cb7a4f415e7f6 completed April 20, 2026, 4:55 p.m.
NED1 Entity disambiguation (via context triple) batch_6a07f6f0c82081908dd0ba4110cec45e completed May 16, 2026, 4:47 a.m.
NEDg Description generation batch_6a07f97b5b94819087241ecc97e6583f completed May 16, 2026, 4:58 a.m.
NED2 Entity disambiguation (via description) batch_6a07f9dec2c48190bd18c2f24a87f335 completed May 16, 2026, 5 a.m.
Created at: April 10, 2026, 1:54 p.m.