Triple

T6018049
Position Surface form Disambiguated ID Type / Status
Subject St. Louis–San Francisco Railway E133994 entity
Predicate predecessor P97 FINISHED
Object Atlantic and Pacific Railroad
The Atlantic and Pacific Railroad was a 19th-century American railroad company chartered to build a transcontinental line linking the Midwest to the Pacific Coast, portions of which later became part of the St. Louis–San Francisco Railway.
E133994 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: Atlantic and Pacific Railroad | Statement: [St. Louis–San Francisco Railway, predecessor, Atlantic and Pacific Railroad]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Atlantic and Pacific Railroad
Context triple: [St. Louis–San Francisco Railway, predecessor, Atlantic and Pacific Railroad]
  • A. Western Pacific Railroad
    Western Pacific Railroad was a major American railroad company that operated primarily in the western United States, known for its scenic transcontinental routes and competitive service against larger carriers like the Southern Pacific.
  • B. Northwestern Pacific Railroad
    The Northwestern Pacific Railroad was a historic rail line in Northern California that connected the San Francisco Bay Area to communities throughout Marin, Sonoma, and Humboldt counties, supporting regional passenger and freight transport.
  • C. St. Louis–San Francisco Railway
    The St. Louis–San Francisco Railway, commonly known as the Frisco, was a major American railroad that operated in the central and south-central United States from the late 19th to the mid-20th century.
  • D. Central Pacific Railroad
    The Central Pacific Railroad was a major 19th-century American railroad company that built the western portion of the First Transcontinental Railroad, linking California to the eastern United States and transforming transportation and commerce.
  • E. Winchester and Western Railroad
    Winchester and Western Railroad is a regional shortline railroad that operates freight services in parts of the Mid-Atlantic United States, including the South Jersey area.
  • 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: Atlantic and Pacific Railroad
Triple: [St. Louis–San Francisco Railway, predecessor, Atlantic and Pacific Railroad]
Generated description
The Atlantic and Pacific Railroad was a 19th-century American railroad company chartered to build a transcontinental line linking the Midwest to the Pacific Coast, portions of which later became part of the St. Louis–San Francisco Railway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Atlantic and Pacific Railroad
Target entity description: The Atlantic and Pacific Railroad was a 19th-century American railroad company chartered to build a transcontinental line linking the Midwest to the Pacific Coast, portions of which later became part of the St. Louis–San Francisco Railway.
  • A. Western Pacific Railroad
    Western Pacific Railroad was a major American railroad company that operated primarily in the western United States, known for its scenic transcontinental routes and competitive service against larger carriers like the Southern Pacific.
  • B. Northwestern Pacific Railroad
    The Northwestern Pacific Railroad was a historic rail line in Northern California that connected the San Francisco Bay Area to communities throughout Marin, Sonoma, and Humboldt counties, supporting regional passenger and freight transport.
  • C. St. Louis–San Francisco Railway chosen
    The St. Louis–San Francisco Railway, commonly known as the Frisco, was a major American railroad that operated in the central and south-central United States from the late 19th to the mid-20th century.
  • D. Central Pacific Railroad
    The Central Pacific Railroad was a major 19th-century American railroad company that built the western portion of the First Transcontinental Railroad, linking California to the eastern United States and transforming transportation and commerce.
  • E. Winchester and Western Railroad
    Winchester and Western Railroad is a regional shortline railroad that operates freight services in parts of the Mid-Atlantic United States, including the South Jersey area.
  • F. None of above.

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_69c008742a5c8190b9cb9c2787a3d8b3 completed March 22, 2026, 3:19 p.m.
NER Named-entity recognition batch_69c04f8458588190a78aa32cbdbecfb1 completed March 22, 2026, 8:22 p.m.
NED1 Entity disambiguation (via context triple) batch_69c1136a4720819092bf2c6a9101c71b completed March 23, 2026, 10:18 a.m.
NEDg Description generation batch_69c113efd9d88190a1ee7bbed4863a11 completed March 23, 2026, 10:20 a.m.
NED2 Entity disambiguation (via description) batch_69c1146097a88190bdd0345da094607e completed March 23, 2026, 10:22 a.m.
Created at: March 22, 2026, 4:07 p.m.