Mexican Alta California
E17150
Mexican Alta California was a vast northwestern province of Mexico from 1821 to 1848, encompassing much of present-day California and parts of neighboring U.S. states before its cession to the United States.
All labels observed (15)
How this entity was disambiguated
This entity first appeared as the object of triple T71804 — 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: Mexican Alta California Context triple: [Legislature of California under Mexican rule, historicalRegion, Mexican Alta California]
-
A.
Baja California
Baja California is a long, narrow peninsula in northwestern Mexico known for its deserts, rugged coastline, and popular tourist destinations such as Tijuana and Ensenada.
-
B.
Viceroyalty of New Spain
The Viceroyalty of New Spain was a major administrative division of the Spanish Empire in the Americas, encompassing much of present-day Mexico, Central America, the Caribbean, and parts of the present-day United States from the 16th to the early 19th century.
-
C.
Cascadia
Cascadia is a bioregion and cultural concept in the Pacific Northwest that encompasses parts of the U.S. and Canadian west coast, known for its temperate rainforests, mountain ranges, and strong environmental identity.
-
D.
Tlalpan
Tlalpan is one of the largest and southernmost boroughs of Mexico City, known for its extensive green areas, historic center, and mix of urban and rural zones.
-
E.
Republic of Texas
The Republic of Texas was an independent sovereign nation in North America from 1836 to 1845, formed after winning independence from Mexico before later joining the United States.
- 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: Mexican Alta California Target entity description: Mexican Alta California was a vast northwestern province of Mexico from 1821 to 1848, encompassing much of present-day California and parts of neighboring U.S. states before its cession to the United States.
-
A.
Baja California
Baja California is a long, narrow peninsula in northwestern Mexico known for its deserts, rugged coastline, and popular tourist destinations such as Tijuana and Ensenada.
-
B.
Viceroyalty of New Spain
The Viceroyalty of New Spain was a major administrative division of the Spanish Empire in the Americas, encompassing much of present-day Mexico, Central America, the Caribbean, and parts of the present-day United States from the 16th to the early 19th century.
-
C.
Cascadia
Cascadia is a bioregion and cultural concept in the Pacific Northwest that encompasses parts of the U.S. and Canadian west coast, known for its temperate rainforests, mountain ranges, and strong environmental identity.
-
D.
Tlalpan
Tlalpan is one of the largest and southernmost boroughs of Mexico City, known for its extensive green areas, historic center, and mix of urban and rural zones.
-
E.
Republic of Texas
The Republic of Texas was an independent sovereign nation in North America from 1836 to 1845, formed after winning independence from Mexico before later joining the United States.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
former Mexican territory
ⓘ
former province ⓘ historical region ⓘ |
| administrativeDivisionOf | Mexican North ⓘ |
| borderChange | lost to the United States after the Mexican–American War ⓘ |
| capital | Monterey ⓘ |
| continent | North America ⓘ |
| country |
First Mexican Empire
ⓘ
Mexico ⓘ
surface form:
United Mexican States
|
| currency | Mexican peso ⓘ |
| demographics |
Californios
ⓘ
surface form:
Californios (Spanish-speaking Mexican residents)
Indigenous peoples of California ⓘ small number of foreign settlers (mainly American and European) ⓘ |
| economy |
cattle ranching
ⓘ
hide and tallow trade ⓘ small-scale agriculture ⓘ |
| endTime | 1848 ⓘ |
| followedBy |
California, United States
ⓘ
surface form:
California (U.S. state)
Oregon Country ⓘ
surface form:
U.S. Territory of Oregon (for northern portions)
|
| governmentType | Mexican territorial administration ⓘ |
| hadMissionSystemLegacy |
Spanish missions in California
ⓘ
surface form:
Spanish missions in California (continued influence under Mexico)
|
| landPolicy | Mexican land grant (ranchos) system ⓘ |
| languageUsed |
Spanish
ⓘ
various Indigenous languages ⓘ |
| legalSystem | Mexican law ⓘ |
| locatedInPresentDay |
Arizona
ⓘ
Baja California ⓘ
surface form:
Baja California Peninsula (northern part, historically associated)
California, United States ⓘ
surface form:
California
Nevada ⓘ Oregon ⓘ Utah ⓘ Wyoming ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| militaryConflict | Californian campaign of the Mexican–American War ⓘ |
| notableCity |
Los Angeles
ⓘ
San Diego ⓘ San Francisco ⓘ San Jose ⓘ
surface form:
San José
Santa Barbara ⓘ |
| partOf | Mexico ⓘ |
| precededBy | Alta California (Spanish colony) ⓘ |
| reasonForEnd | cession to the United States under the Treaty of Guadalupe Hidalgo ⓘ |
| religion | Roman Catholicism ⓘ |
| significantEvent |
Bear Flag Revolt
ⓘ
Mexican War of Independence ⓘ Mexican–American War ⓘ |
| startTime | 1821 ⓘ |
| treaty | Treaty of Guadalupe Hidalgo ⓘ |
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: Mexican Alta California Description of subject: Mexican Alta California was a vast northwestern province of Mexico from 1821 to 1848, encompassing much of present-day California and parts of neighboring U.S. states before its cession to the United States.
Referenced by (54)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Mexican Cession (unorganized U.S. territory)
this entity surface form:
Alta California
this entity surface form:
Alta California
this entity surface form:
Mexican California