California principal meridian network
E234067
The California principal meridian network is a system of survey meridians and baselines used as the foundational reference framework for land surveying and legal land descriptions throughout much of California.
All labels observed (1)
| Label | Occurrences |
|---|---|
| California principal meridian network canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2118907 — 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: California principal meridian network Context triple: [Humboldt meridian, partOf, California principal meridian network]
-
A.
California Quadrangle
The California Quadrangle is a historic architectural complex in San Diego’s Balboa Park, known for its Spanish Colonial Revival design and cultural institutions.
-
B.
Nevada land survey system
The Nevada land survey system is a cadastral framework used to define and organize land boundaries and property descriptions across the state of Nevada.
-
C.
Central California
Central California is a large, predominantly agricultural region in the middle of the state of California, encompassing the fertile Central Valley and parts of the coastal and inland areas between Northern and Southern California.
-
D.
Sonora, California
Sonora, California is a historic Gold Rush-era city in the Sierra Nevada foothills that serves as a regional hub for outdoor recreation and access to nearby national forests and parks.
-
E.
California state highway system
The California state highway system is the extensive network of state-maintained roads and freeways that forms the backbone of ground transportation across 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: California principal meridian network Target entity description: The California principal meridian network is a system of survey meridians and baselines used as the foundational reference framework for land surveying and legal land descriptions throughout much of California.
-
A.
California Quadrangle
The California Quadrangle is a historic architectural complex in San Diego’s Balboa Park, known for its Spanish Colonial Revival design and cultural institutions.
-
B.
Nevada land survey system
The Nevada land survey system is a cadastral framework used to define and organize land boundaries and property descriptions across the state of Nevada.
-
C.
Central California
Central California is a large, predominantly agricultural region in the middle of the state of California, encompassing the fertile Central Valley and parts of the coastal and inland areas between Northern and Southern California.
-
D.
Sonora, California
Sonora, California is a historic Gold Rush-era city in the Sierra Nevada foothills that serves as a regional hub for outdoor recreation and access to nearby national forests and parks.
-
E.
California state highway system
The California state highway system is the extensive network of state-maintained roads and freeways that forms the backbone of ground transportation across California.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
geodetic framework
ⓘ
land survey reference system ⓘ public land survey system component ⓘ |
| appliesToJurisdiction |
California, United States
ⓘ
surface form:
California
|
| basedOn |
principal meridians
ⓘ
survey baselines ⓘ |
| continuesToBeUsedFor | modern cadastral surveys ⓘ |
| coordinateSystem | rectangular survey system ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| covers | much of California ⓘ |
| defines |
range boundaries
ⓘ
section boundaries ⓘ township boundaries ⓘ |
| documentation |
BLM cadastral survey records
ⓘ
California state survey manuals ⓘ |
| ensures | uniform township and range layout in California ⓘ |
| governingAuthority |
U.S. Bureau of Land Management
ⓘ
surface form:
United States Bureau of Land Management
|
| hasPart |
Humboldt meridian
ⓘ
surface form:
Humboldt Base Line
Humboldt meridian ⓘ
surface form:
Humboldt Principal Meridian
Mount Diablo meridian ⓘ
surface form:
Mount Diablo Base Line
Mount Diablo meridian ⓘ
surface form:
Mount Diablo Principal Meridian
San Bernardino meridian ⓘ
surface form:
San Bernardino Base Line
San Bernardino meridian ⓘ
surface form:
San Bernardino Principal Meridian
|
| historicalUse | 19th century land surveys in California ⓘ |
| legalStatus | official survey reference framework ⓘ |
| partOf | Public Land Survey System ⓘ |
| primaryPurpose | standardize land description in California ⓘ |
| relatedTo |
California coordinate system
ⓘ
geodetic control networks in California ⓘ |
| spatialReferenceType | meridian-baseline grid ⓘ |
| supports |
property boundary determination
ⓘ
public land administration ⓘ resource management mapping ⓘ |
| usedBy |
county surveyors
ⓘ
federal land surveyors ⓘ private land surveyors ⓘ state land surveyors ⓘ |
| usedFor |
cadastral mapping
ⓘ
land surveying ⓘ legal land descriptions ⓘ |
| usedIn |
deeds
ⓘ
land patents ⓘ right-of-way descriptions ⓘ subdivision plats ⓘ |
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: California principal meridian network Description of subject: The California principal meridian network is a system of survey meridians and baselines used as the foundational reference framework for land surveying and legal land descriptions throughout much of California.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.