Triple

T7226370
Position Surface form Disambiguated ID Type / Status
Subject Katy E154789 entity
Predicate predecessor P97 FINISHED
Object Union Pacific Railway Southern Branch E162209 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: Union Pacific Railway Southern Branch | Statement: [Katy, predecessor, Union Pacific Railway Southern Branch]

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: Union Pacific Railway Southern Branch
Context triple: [Katy, predecessor, Union Pacific Railway Southern Branch]
  • A. Union Pacific Railway, Southern Branch chosen
    The Union Pacific Railway, Southern Branch was a 19th-century rail line that later evolved into the Missouri–Kansas–Texas Railroad, helping open the American Midwest and Southwest to expanded transportation and commerce.
  • B. Union Pacific Railroad Coast Subdivision
    The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.
  • C. 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.
  • D. 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.
  • E. Union Pacific North Line
    The Union Pacific North Line is a Metra commuter rail line in the Chicago metropolitan area that runs north from downtown Chicago through suburbs along Lake Michigan into Kenosha, Wisconsin.
  • 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_69c68811dd1c8190ac460bb39e64e1f0 elicitation completed
NER batch_69c6e9de21e081908f30700f6211c5ef ner completed
NED1 batch_69c7eecda0548190b12b1bc36b42e7ea ned_source_triple completed
Created at: March 27, 2026, 2:54 p.m.