Triple

T5634362
Position Surface form Disambiguated ID Type / Status
Subject Virginia and Truckee Railroad E147909 entity
Predicate connectedTo P37 FINISHED
Object Central Pacific Railroad E117141 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Central Pacific Railroad | Statement: [Virginia and Truckee Railroad, connectedTo, Central Pacific Railroad]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Central Pacific Railroad
Context triple: [Virginia and Truckee Railroad, connectedTo, Central Pacific Railroad]
  • A. Central Pacific Railroad chosen
    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.
  • B. Southern Pacific Railroad
    Southern Pacific Railroad was a major American railroad company that operated extensive rail networks across the western and southwestern United States from the 19th to the late 20th century.
  • C. Central Pacific
    Central Pacific refers to the midsection of the Pacific Ocean region, historically significant as a major area of military operations and command during the Pacific theater of World War II.
  • D. Central Pacific
    Central Pacific is a subgroup of Oceanic Austronesian languages that includes Fijian and related languages spoken across parts of Fiji and nearby Pacific islands.
  • E. Union Pacific Railroad
    Union Pacific Railroad is one of the largest freight rail networks in the United States, operating an extensive system that spans the western two-thirds of the country.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69c00907bc8881909ed760d3ed73ef35 elicitation completed
NER batch_69c0226118548190877793dadf6cacba ner completed
NED1 batch_69c04d6d2dfc8190a2eabb8beda04ee5 ned_source_triple completed
Created at: March 22, 2026, 3:41 p.m.