Triple

T8255453
Position Surface form Disambiguated ID Type / Status
Subject San Francisco Overland Limited E193059 entity
Predicate operatedOn P2572 FINISHED
Object Southern Pacific main line between Ogden and San Francisco E675995 NE FINISHED

How this triple was built (2 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: Southern Pacific main line between Ogden and San Francisco | Statement: [San Francisco Overland Limited, operatedOn, Southern Pacific main line between Ogden and San Francisco]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Southern Pacific main line between Ogden and San Francisco
Context triple: [San Francisco Overland Limited, operatedOn, Southern Pacific main line between Ogden and San Francisco]
  • A. Southern Pacific main line in California’s Central Valley
    The Southern Pacific main line in California’s Central Valley was a major north–south railroad corridor that formed the backbone of freight and passenger rail service through the state’s agricultural heartland.
  • B. Southern Pacific Siskiyou and Shasta routes
    The Southern Pacific Siskiyou and Shasta routes were mountainous mainlines in Oregon and Northern California known for their steep grades, dramatic scenery, and heavy steam locomotive operations.
  • C. Southern Pacific Donner Pass line chosen
    The Southern Pacific Donner Pass line is a historic and treacherous trans-Sierra Nevada railroad route in California, renowned for its steep grades, heavy snowfall, and vital role in westward rail transportation.
  • D. Union Pacific Railroad line
    The Union Pacific Railroad line is a major freight rail route in the western United States operated by Union Pacific Railroad, one of the largest railroad networks in North America.
  • E. Union Pacific West Line
    The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 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_69ca82dfad9c8190b8cd18fb89f50f40 completed March 30, 2026, 2:04 p.m.
NER Named-entity recognition batch_69cb78f9f680819088f1d56e0f98974f completed March 31, 2026, 7:34 a.m.
NED1 Entity disambiguation (via context triple) batch_69cd3553b48881909cc72e443aad9539 completed April 1, 2026, 3:10 p.m.
Created at: March 30, 2026, 5:48 p.m.