Triple

T23119249
Position Surface form Disambiguated ID Type / Status
Subject Hamilton McKown Twombly E576843 entity
Predicate boardMemberOf P10 FINISHED
Object New York, Chicago and St. Louis Railroad — NE NERFINISHED

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: New York, Chicago and St. Louis Railroad | Statement: [Hamilton McKown Twombly, boardMemberOf, New York, Chicago and St. Louis 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: New York, Chicago and St. Louis Railroad
Context triple: [Hamilton McKown Twombly, boardMemberOf, New York, Chicago and St. Louis Railroad]
  • A. New York, Chicago and St. Louis Railroad chosen
    The New York, Chicago and St. Louis Railroad, commonly known as the Nickel Plate Road, was a prominent Midwestern and Great Lakes region railroad in the United States that operated major freight and passenger services between key industrial cities.
  • B. Chicago and Alton Railroad
    The Chicago and Alton Railroad was a prominent 19th- and early 20th-century Midwestern U.S. railroad that connected Chicago with central and southern Illinois and Missouri, playing a key role in regional passenger and freight transport.
  • C. St. Louis, Iron Mountain and Southern Railway
    The St. Louis, Iron Mountain and Southern Railway was a major 19th- and early 20th-century American railroad that operated primarily in Missouri, Arkansas, and surrounding states, facilitating regional commerce and expansion.
  • D. St. Louis, Memphis and Southeastern Railroad
    The St. Louis, Memphis and Southeastern Railroad was a regional U.S. railroad line that operated in the early 20th century, later becoming part of the St. Louis–San Francisco Railway (Frisco) system.
  • E. Illinois Central Railroad
    The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e245f6c2e881909a228fdcfeb7c7d3 elicitation completed
NER batch_69f18e4ece5481908d05b4b1e6a07db3 ner completed
Created at: April 17, 2026, 3:59 p.m.