Triple

T9568948
Position Surface form Disambiguated ID Type / Status
Subject Downtown San Mateo E230863 entity
Predicate hasLandmark P105 FINISHED
Object Central Park (San Mateo)
Central Park (San Mateo) is a prominent public park in San Mateo, California, known for its Japanese tea garden, open green spaces, and community events.
 E806840 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: Central Park (San Mateo) | Statement: [Downtown San Mateo, hasLandmark, Central Park (San Mateo)]

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: Central Park (San Mateo)
Context triple: [Downtown San Mateo, hasLandmark, Central Park (San Mateo)]
  • A. Sutro Heights Park
    Sutro Heights Park is a historic hilltop park in San Francisco overlooking Ocean Beach and the Pacific Ocean, known for its scenic views and remnants of Adolph Sutro’s former estate and gardens.
  • B. El Palo Alto Park
    El Palo Alto Park is a small historic park in Palo Alto, California, best known as the riverside home of the iconic El Palo Alto redwood tree that gave the city its name.
  • C. Retiro Park
    Retiro Park is a large historic public park in central Madrid, Spain, known for its landscaped gardens, monuments, and boating lake.
  • D. Moraga Commons Park
    Moraga Commons Park is a popular community park in Moraga, California, known for its open green spaces, playgrounds, picnic areas, and seasonal concerts and events.
  • E. Alum Rock Park
    Alum Rock Park is a historic municipal park in San Jose, California, known for its rugged canyon landscapes, mineral springs, and extensive hiking trails in the foothills of the Diablo Range.
  • 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: Central Park (San Mateo)
Target entity description: Central Park (San Mateo) is a prominent public park in San Mateo, California, known for its Japanese tea garden, open green spaces, and community events.
  • A. Sutro Heights Park
    Sutro Heights Park is a historic hilltop park in San Francisco overlooking Ocean Beach and the Pacific Ocean, known for its scenic views and remnants of Adolph Sutro’s former estate and gardens.
  • B. El Palo Alto Park
    El Palo Alto Park is a small historic park in Palo Alto, California, best known as the riverside home of the iconic El Palo Alto redwood tree that gave the city its name.
  • C. Retiro Park
    Retiro Park is a large historic public park in central Madrid, Spain, known for its landscaped gardens, monuments, and boating lake.
  • D. Moraga Commons Park
    Moraga Commons Park is a popular community park in Moraga, California, known for its open green spaces, playgrounds, picnic areas, and seasonal concerts and events.
  • E. Alum Rock Park
    Alum Rock Park is a historic municipal park in San Jose, California, known for its rugged canyon landscapes, mineral springs, and extensive hiking trails in the foothills of the Diablo Range.
  • F. None of above. chosen

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: Central Park (San Mateo)
Triple: [Downtown San Mateo, hasLandmark, Central Park (San Mateo)]
Generated description
Central Park (San Mateo) is a prominent public park in San Mateo, California, known for its Japanese tea garden, open green spaces, and community events.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69ca847f22188190a56e4a97625bef22 elicitation completed
NER batch_69cd9987cb0c8190af32a1193de54890 ner completed
NED1 batch_69d152b5b40c81909a84e34a944abfd0 ned_source_triple completed
NED2 batch_69d15445e7a88190accd19c53a6170bb ned_description completed
NEDg batch_69d153c26b8481908298b32918666562 nedg completed
Created at: March 30, 2026, 8:04 p.m.