Triple

T16194262
Position Surface form Disambiguated ID Type / Status
Subject Union Pacific City of Portland E393020 entity
Predicate operatedOnRoute P21808 FINISHED
Object Chicago–Portland route
The Chicago–Portland route is a historic long-distance passenger rail corridor linking Chicago, Illinois, with Portland, Oregon, across the northern United States.
 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–Portland route | Statement: [Union Pacific City of Portland, operatedOnRoute, Chicago–Portland 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–Portland route
Context triple: [Union Pacific City of Portland, operatedOnRoute, Chicago–Portland route]
  • A. 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.
  • B. 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.
  • C. Washington, D.C.–Chicago route
    The Washington, D.C.–Chicago route is a major intercity passenger rail corridor linking the U.S. capital with the Midwest hub of Chicago, historically served by trains such as the Capitol Limited.
  • D. 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.
  • 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–Portland route
Target entity description: The Chicago–Portland route is a historic long-distance passenger rail corridor linking Chicago, Illinois, with Portland, Oregon, across the northern United States.
  • A. Chicago–Pacific Northwest route chosen
    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.
  • B. 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.
  • C. Washington, D.C.–Chicago route
    The Washington, D.C.–Chicago route is a major intercity passenger rail corridor linking the U.S. capital with the Midwest hub of Chicago, historically served by trains such as the Capitol Limited.
  • D. 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.
  • 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.

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–Portland route
Triple: [Union Pacific City of Portland, operatedOnRoute, Chicago–Portland route]
Generated description
The Chicago–Portland route is a historic long-distance passenger rail corridor linking Chicago, Illinois, with Portland, Oregon, across the northern United States.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d87f1e49ac8190a311b54d32990576 elicitation completed
NER batch_69e222d851188190b2452d165e4fc4bd ner completed
NED1 batch_69ffff0bfd08819083afc4bea1b99aad ned_source_triple completed
NED2 batch_6a0002106a5c8190b92d27f01178a321 ned_description completed
NEDg batch_6a0001b815c481908ed6fcaea42ee9fc nedg completed
Created at: April 10, 2026, 5:02 a.m.