Triple

T5011288
Position Surface form Disambiguated ID Type / Status
Subject Ashland, California E112625 entity
Predicate locatedWestOf P4239 FINISHED
Object Castro Valley, California E265559 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: Castro Valley, California | Statement: [Ashland, California, locatedWestOf, Castro Valley, California]

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: Castro Valley, California
Context triple: [Ashland, California, locatedWestOf, Castro Valley, California]
  • A. Castro Valley, California chosen
    Castro Valley, California is a suburban unincorporated community in Alameda County known for its residential neighborhoods, proximity to the East Bay hills, and access to regional parks and commuting routes.
  • B. Valencia, California
    Valencia, California is a master-planned community in the city of Santa Clarita known for its residential neighborhoods, shopping centers, and as the home of the renowned California Institute of the Arts.
  • C. El Sobrante, California
    El Sobrante, California is an unincorporated suburban community in the San Francisco Bay Area known for its residential neighborhoods and proximity to Richmond and other East Bay cities.
  • D. San Carlos, California
    San Carlos, California is a small city on the San Francisco Peninsula known for its suburban charm, vibrant downtown, and role as a local transportation and business hub.
  • E. El Cerrito, California
    El Cerrito, California is a small suburban city in Contra Costa County in the San Francisco Bay Area, known for its residential neighborhoods, hillside views, and proximity to major urban centers.
  • 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_69bd4434acb8819086679dbeccc2fe54 elicitation completed
NER batch_69bd730d70ac8190a1818d628e95ab04 ner completed
NED1 batch_69beba57f8fc8190a0476856fba8bb76 ned_source_triple completed
Created at: March 20, 2026, 1:35 p.m.