Midpeninsula Regional Open Space District
E815490
Midpeninsula Regional Open Space District is a public agency in California’s San Francisco Peninsula region that acquires and manages open space lands for conservation and recreation.
All labels observed (4)
How this entity was disambiguated
This entity first appeared as the object of triple T9705901 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Midpeninsula Regional Open Space District Context triple: [Rancho San Antonio County Park and Open Space Preserve, operator, Midpeninsula Regional Open Space District]
-
A.
Suisun Resource Conservation District
The Suisun Resource Conservation District is a local agency responsible for conserving, restoring, and managing natural resources and wildlife habitat in and around California’s Suisun Marsh.
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B.
East Bay Regional Park District
East Bay Regional Park District is a special regional agency that manages and preserves a large network of public parks, trails, and open spaces in the San Francisco Bay Area’s East Bay region.
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C.
Los Altos Hills open space system
The Los Altos Hills open space system is a network of protected natural areas and recreational lands in Los Altos Hills, California, dedicated to preserving local landscapes and providing public access to trails and outdoor activities.
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D.
San Francisco Bay Area open space network
The San Francisco Bay Area open space network is a regional system of parks, preserves, and protected natural lands that conserves biodiversity and provides recreation across the greater Bay Area.
-
E.
San Luis Obispo County Parks
San Luis Obispo County Parks is the county agency responsible for operating and preserving parks, natural areas, and recreational facilities throughout San Luis Obispo County, California.
- 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: Midpeninsula Regional Open Space District Target entity description: Midpeninsula Regional Open Space District is a public agency in California’s San Francisco Peninsula region that acquires and manages open space lands for conservation and recreation.
-
A.
Suisun Resource Conservation District
The Suisun Resource Conservation District is a local agency responsible for conserving, restoring, and managing natural resources and wildlife habitat in and around California’s Suisun Marsh.
-
B.
East Bay Regional Park District
East Bay Regional Park District is a special regional agency that manages and preserves a large network of public parks, trails, and open spaces in the San Francisco Bay Area’s East Bay region.
-
C.
Los Altos Hills open space system
The Los Altos Hills open space system is a network of protected natural areas and recreational lands in Los Altos Hills, California, dedicated to preserving local landscapes and providing public access to trails and outdoor activities.
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D.
San Francisco Bay Area open space network
The San Francisco Bay Area open space network is a regional system of parks, preserves, and protected natural lands that conserves biodiversity and provides recreation across the greater Bay Area.
-
E.
San Luis Obispo County Parks
San Luis Obispo County Parks is the county agency responsible for operating and preserving parks, natural areas, and recreational facilities throughout San Luis Obispo County, California.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
park and open space district
ⓘ
public agency ⓘ special district ⓘ |
| alsoKnownAs |
Midpen
ⓘ
Midpen Open Space ⓘ
linked to:
Midpeninsula Regional Open Space District
|
| boardMembersElectedBy | voters in the district ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| focusesOn |
biodiversity conservation
ⓘ
scenic landscape protection ⓘ |
| foundedBy | voter-approved initiative ⓘ |
| fundedBy |
bond measures
ⓘ
donations ⓘ grants ⓘ property tax revenues ⓘ |
| governedBy | elected board of directors ⓘ |
| governs | Midpeninsula Regional Open Space District preserves ⓘ |
| hasActivity |
acquisition of open space lands
ⓘ
environmental education and outreach ⓘ provision of public access for recreation ⓘ restoration of natural habitats ⓘ |
| hasMainPurpose |
land conservation
ⓘ
natural resource protection ⓘ open space preservation ⓘ public recreation ⓘ |
| hasOfficialWebsite | https://www.openspace.org ⓘ |
| headquartersLocation |
Los Altos, California
ⓘ
linked to:
Los Altos, California, United States
|
| inception | 1972 ⓘ |
| jurisdiction |
San Mateo County, California
ⓘ
Santa Clara County, California ⓘ
linked to:
Santa Clara County
portions of Santa Cruz County, California ⓘ |
| legalForm | independent special district ⓘ |
| locatedIn |
San Francisco Peninsula
ⓘ
San Mateo County ⓘ
linked to:
San Mateo County, California
Santa Clara County ⓘ Santa Cruz County ⓘ
linked to:
Santa Cruz County, California
|
| manages |
open space preserves
ⓘ
trails ⓘ watershed lands ⓘ wildlife habitat areas ⓘ working lands and rangelands ⓘ |
| numberOfBoardMembers | 7 ⓘ |
| operatesInSector |
environmental conservation
ⓘ
parks and recreation ⓘ |
| regionServed |
San Francisco Peninsula
ⓘ
South Bay ⓘ |
| serviceArea |
San Mateo County, California
ⓘ
Santa Clara County, California ⓘ
linked to:
Santa Clara County
Santa Cruz County, California ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Midpeninsula Regional Open Space District Description of subject: Midpeninsula Regional Open Space District is a public agency in California’s San Francisco Peninsula region that acquires and manages open space lands for conservation and recreation.
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
Rancho San Antonio County Park and Open Space Preserve
→
operator
→
Midpeninsula Regional Open Space District
ⓘ
El Corte de Madera Creek Open Space Preserve
→
managedBy
→
Midpeninsula Regional Open Space District
ⓘ
Purisima Creek Redwoods Open Space Preserve
→
managedBy
→
Midpeninsula Regional Open Space District
ⓘ
linked to: Midpeninsula Regional Open Space District
linked to: Midpeninsula Regional Open Space District
subject linked to:
creek named El Corte de Madera Creek
Ravenswood Open Space Preserve
→
governingBody
→
Board of Directors of the Midpeninsula Regional Open Space District
ⓘ
linked to: Midpeninsula Regional Open Space District