Triple

T10100501
Position Surface form Disambiguated ID Type / Status
Subject Blue Island–Vermont Street station E216185 entity
Predicate servesRegion P82 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: [Blue Island–Vermont Street station, servesRegion, 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: [Blue Island–Vermont Street station, servesRegion, 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_69ca83d039f08190b9d10363221c69fb elicitation completed
NER batch_69cdd09878f88190bcfa2c81fb10e821 ner completed
NED1 batch_69d2b6cb50b08190a0ff42c60d338c79 ned_source_triple completed
Created at: March 30, 2026, 9:02 p.m.