Triple

T5277850
Position Surface form Disambiguated ID Type / Status
Subject Palo Alto Baylands Nature Preserve E119416 entity
Predicate hasPart P35 FINISHED
Object Matadero Creek
Matadero Creek is a small waterway in Palo Alto, California, that flows through urban areas and wetlands before emptying into the San Francisco Bay.
 E552454 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: Matadero Creek | Statement: [Palo Alto Baylands Nature Preserve, hasPart, Matadero Creek]

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: Matadero Creek
Context triple: [Palo Alto Baylands Nature Preserve, hasPart, Matadero Creek]
  • A. San Luis Creek
    San Luis Creek is a stream in central California that serves as a primary tributary feeding the San Luis Reservoir in Merced County.
  • B. Calero Creek
    Calero Creek is a stream in Santa Clara County, California, that drains the foothills near Calero Reservoir and flows northward through San Jose before joining the Guadalupe River.
  • C. Alhambra Creek
    Alhambra Creek is a small urban waterway running through Martinez in Contra Costa County, California, known for its role in local flood control and habitat restoration efforts.
  • D. Los Gatos Creek
    Los Gatos Creek is a stream in Santa Clara County, California, that flows through the town of Los Gatos and parts of the South Bay before joining the Guadalupe River.
  • E. Guadalupe Creek
    Guadalupe Creek is a smaller stream in California that feeds into the Guadalupe River, contributing to the region’s watershed and local aquatic habitats.
  • 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: Matadero Creek
Target entity description: Matadero Creek is a small waterway in Palo Alto, California, that flows through urban areas and wetlands before emptying into the San Francisco Bay.
  • A. San Luis Creek
    San Luis Creek is a stream in central California that serves as a primary tributary feeding the San Luis Reservoir in Merced County.
  • B. Calero Creek
    Calero Creek is a stream in Santa Clara County, California, that drains the foothills near Calero Reservoir and flows northward through San Jose before joining the Guadalupe River.
  • C. Alhambra Creek
    Alhambra Creek is a small urban waterway running through Martinez in Contra Costa County, California, known for its role in local flood control and habitat restoration efforts.
  • D. Los Gatos Creek
    Los Gatos Creek is a stream in Santa Clara County, California, that flows through the town of Los Gatos and parts of the South Bay before joining the Guadalupe River.
  • E. Guadalupe Creek
    Guadalupe Creek is a smaller stream in California that feeds into the Guadalupe River, contributing to the region’s watershed and local aquatic habitats.
  • 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: Matadero Creek
Triple: [Palo Alto Baylands Nature Preserve, hasPart, Matadero Creek]
Generated description
Matadero Creek is a small waterway in Palo Alto, California, that flows through urban areas and wetlands before emptying into the San Francisco Bay.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69bd446d05a8819092ad333a3f9c8d5c elicitation completed
NER batch_69bd8474e7fc8190ab5dd84f665ae6a4 ner completed
NED1 batch_69c0b0779eec81909793446efb2ce749 ned_source_triple completed
NED2 batch_69c0b27981848190a5b7c618044241b0 ned_description completed
NEDg batch_69c0b1c9ebdc819089752d150b584a6f nedg completed
Created at: March 20, 2026, 1:51 p.m.