Triple

T4880289
Position Surface form Disambiguated ID Type / Status
Subject Friendship Heights station E109307 entity
Predicate locatedIn P40 FINISHED
Object Washington, D.C. metropolitan area E514 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: Washington, D.C. metropolitan area | Statement: [Friendship Heights station, locatedIn, Washington, D.C. 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: Washington, D.C. metropolitan area
Context triple: [Friendship Heights station, locatedIn, Washington, D.C. metropolitan area]
  • A. Baltimore–Washington metropolitan area
    The Baltimore–Washington metropolitan area is a major combined urban region in the Mid-Atlantic United States centered on the cities of Baltimore, Maryland, and Washington, D.C., known for its dense population, federal government presence, and diverse economy.
  • B. Washington metropolitan area chosen
    The Washington metropolitan area is a major U.S. urban region centered on the nation’s capital, encompassing Washington, D.C. and its surrounding suburbs in Maryland, Virginia, and West Virginia.
  • C. Jamestown metropolitan area
    The Jamestown metropolitan area is a U.S. Census-defined region in southwestern New York centered on the city of Jamestown and its surrounding communities.
  • D. Distrito Capital
    Distrito Capital is the federal district that encompasses Caracas, the capital and political center of Venezuela.
  • E. New York City–Washington, D.C.
    New York City–Washington, D.C. refers to the heavily traveled, fully electrified segment of the Northeast Corridor rail line connecting the two major East Coast cities.
  • 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_69bd440e9d64819083e82cf33b4d9570 elicitation completed
NER batch_69bd6dc071d4819083ea9fd0c73c5f49 ner completed
NED1 batch_69be6803a1c081908972984241276c19 ned_source_triple completed
Created at: March 20, 2026, 1:27 p.m.