Triple

T6692309
Position Surface form Disambiguated ID Type / Status
Subject Milwaukee Road E152656 entity
Predicate mainLine P24771 FINISHED
Object Chicago–Pacific Northwest route
The Chicago–Pacific Northwest route was a major transcontinental rail corridor linking Chicago with cities in the Pacific Northwest, historically operated by the Milwaukee Road.
 E614263 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: Chicago–Pacific Northwest route | Statement: [Milwaukee Road, mainLine, Chicago–Pacific Northwest route]

Disambiguation candidates (2 decisions)

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: Chicago–Pacific Northwest route
Context triple: [Milwaukee Road, mainLine, Chicago–Pacific Northwest route]
  • A. Chicago–Twin Cities route
    The Chicago–Twin Cities route was a major passenger and freight rail corridor linking Chicago with Minneapolis–Saint Paul, historically served by several prominent Midwestern railroads.
  • B. New York–St. Louis route
    The New York–St. Louis route was a major intercity passenger and freight rail corridor in the United States that connected the East Coast with the Midwest.
  • C. Pittsburgh–Chicago route
    The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
  • D. Panhandle Route
    The Panhandle Route was a major American railroad line operated by the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad that connected key Midwestern and Eastern cities as part of the Pennsylvania Railroad system.
  • E. Chicago–Cleveland route
    The Chicago–Cleveland route is a major Midwestern rail corridor that historically linked Chicago, Illinois, with Cleveland, Ohio, serving as a key segment for passenger and freight traffic across the Great Lakes region.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Chicago–Pacific Northwest route
Target entity description: The Chicago–Pacific Northwest route was a major transcontinental rail corridor linking Chicago with cities in the Pacific Northwest, historically operated by the Milwaukee Road.
  • A. Chicago–Twin Cities route
    The Chicago–Twin Cities route was a major passenger and freight rail corridor linking Chicago with Minneapolis–Saint Paul, historically served by several prominent Midwestern railroads.
  • B. New York–St. Louis route
    The New York–St. Louis route was a major intercity passenger and freight rail corridor in the United States that connected the East Coast with the Midwest.
  • C. Pittsburgh–Chicago route
    The Pittsburgh–Chicago route was a major Pennsylvania Railroad passenger and freight corridor linking the industrial centers of Pittsburgh, Pennsylvania, and Chicago, Illinois.
  • D. Panhandle Route
    The Panhandle Route was a major American railroad line operated by the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad that connected key Midwestern and Eastern cities as part of the Pennsylvania Railroad system.
  • E. Chicago–Cleveland route
    The Chicago–Cleveland route is a major Midwestern rail corridor that historically linked Chicago, Illinois, with Cleveland, Ohio, serving as a key segment for passenger and freight traffic across the Great Lakes region.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: Chicago–Pacific Northwest route
Triple: [Milwaukee Road, mainLine, Chicago–Pacific Northwest route]
Generated description
The Chicago–Pacific Northwest route was a major transcontinental rail corridor linking Chicago with cities in the Pacific Northwest, historically operated by the Milwaukee Road.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69c6880687b08190805278b504d1c92c elicitation completed
NER batch_69c6b193a8c08190a99152a8eca018e6 ner completed
NED1 batch_69c7007d2cb881909cebe2ab0d55ce3d ned_source_triple completed
NED2 batch_69c705db3098819083ce9a93e429b758 ned_description completed
NEDg batch_69c7054749ac8190b0d8153dcf9fd8a0 nedg completed
Created at: March 27, 2026, 2:05 p.m.