Triple

T8438091
Position Surface form Disambiguated ID Type / Status
Subject Union Pacific West Line E199279 entity
Predicate locale P387 FINISHED
Object Chicago metropolitan area E5493 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 metropolitan area | Statement: [Union Pacific West Line, locale, Chicago metropolitan area]

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: Chicago metropolitan area
Context triple: [Union Pacific West Line, locale, Chicago metropolitan area]
  • A. Chicago metropolitan area chosen
    The Chicago metropolitan area is a major U.S. urban and economic region centered on the city of Chicago, encompassing numerous surrounding suburbs across northeastern Illinois and parts of neighboring states.
  • B. Detroit metropolitan area
    The Detroit metropolitan area is a major U.S. industrial and economic hub best known as the historic center of the American automotive industry.
  • C. Madison metropolitan area
    The Madison metropolitan area is a regional urban and economic hub in south-central Wisconsin centered on the city of Madison, known for its state government, major university, and growing technology and service sectors.
  • D. Chicago Basin
    Chicago Basin is a remote alpine basin in Colorado renowned for its dramatic scenery, popular backpacking routes, and access to several notable San Juan Mountain fourteeners.
  • E. City of Chicago
    The City of Chicago is a major U.S. metropolis on Lake Michigan known for its influential architecture, diverse neighborhoods, and role as a cultural, economic, and transportation hub of the Midwest.
  • 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_69ca8314cd6c8190a6b8c2a1096e18f3 elicitation completed
NER batch_69cbe135657c81908ed8156fbfbef6ec ner completed
NED1 batch_69ce399e8efc8190ad6fa8a6cf91797c ned_source_triple completed
Created at: March 30, 2026, 6:08 p.m.