California–Arizona border
E462881
The California–Arizona border is the state line along the lower Colorado River that separates California from Arizona in the southwestern United States.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Arizona state line near Yuma | 1 |
| California–Arizona border canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4703208 — 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–Arizona border Context triple: [Quechan Indian Reservation, crossesPoliticalBoundary, California–Arizona border]
-
A.
California–Nevada border
The California–Nevada border is the state line in the western United States that divides California from Nevada, running through diverse landscapes including the Sierra Nevada and the Lake Tahoe region.
-
B.
Baja California border corridor
The Baja California border corridor is a transnational region along the Mexico–United States border in the state of Baja California, encompassing key border cities and crossings that serve as major hubs for trade, migration, and cultural exchange.
-
C.
U.S.–Mexico border
The U.S.–Mexico border is the international boundary separating the United States and Mexico, stretching from the Pacific Ocean to the Gulf of Mexico and serving as a major focal point for migration, trade, and security issues.
-
D.
Oregon–California border
The Oregon–California border is the state line separating Oregon and California in the western United States, running from the Pacific coast inland across diverse terrain including mountains, forests, and river valleys.
-
E.
Mexicali Valley
Mexicali Valley is a major agricultural region in northern Baja California, Mexico, known for its extensive irrigated farmlands and proximity to the U.S.–Mexico border.
- 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–Arizona border Target entity description: The California–Arizona border is the state line along the lower Colorado River that separates California from Arizona in the southwestern United States.
-
A.
California–Nevada border
The California–Nevada border is the state line in the western United States that divides California from Nevada, running through diverse landscapes including the Sierra Nevada and the Lake Tahoe region.
-
B.
Baja California border corridor
The Baja California border corridor is a transnational region along the Mexico–United States border in the state of Baja California, encompassing key border cities and crossings that serve as major hubs for trade, migration, and cultural exchange.
-
C.
U.S.–Mexico border
The U.S.–Mexico border is the international boundary separating the United States and Mexico, stretching from the Pacific Ocean to the Gulf of Mexico and serving as a major focal point for migration, trade, and security issues.
-
D.
Oregon–California border
The Oregon–California border is the state line separating Oregon and California in the western United States, running from the Pacific coast inland across diverse terrain including mountains, forests, and river valleys.
-
E.
Mexicali Valley
Mexicali Valley is a major agricultural region in northern Baja California, Mexico, known for its extensive irrigated farmlands and proximity to the U.S.–Mexico border.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
international border
ⓘ
political boundary ⓘ state border ⓘ |
| adjacentTo |
California–Nevada border
NERFINISHED
ⓘ
Mexico–United States border NERFINISHED ⓘ |
| containsCrossing |
Interstate 10 California–Arizona crossing
NERFINISHED
ⓘ
Interstate 40 California–Arizona crossing NERFINISHED ⓘ Interstate 8 California–Arizona crossing NERFINISHED ⓘ London Bridge crossing at Lake Havasu NERFINISHED ⓘ U.S. Route 93 California–Arizona crossing NERFINISHED ⓘ U.S. Route 95 California–Arizona crossing NERFINISHED ⓘ U.S. Route 95–U.S. Route 62 California–Arizona crossing NERFINISHED ⓘ |
| coordinateSystem | north–south and river-based boundary ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crossesNear |
Blythe, California
NERFINISHED
ⓘ
Lake Havasu City, Arizona NERFINISHED ⓘ Needles, California NERFINISHED ⓘ Parker, Arizona NERFINISHED ⓘ Yuma, Arizona NERFINISHED ⓘ |
| definedBy | course of the Colorado River ⓘ |
| followsRiver | Colorado River NERFINISHED ⓘ |
| followsSectionOf | Lower Colorado River NERFINISHED ⓘ |
| hasDisputeHistory | Colorado River boundary disputes between California and Arizona ⓘ |
| hasHydrologicalFeature |
Imperial Dam
NERFINISHED
ⓘ
Morelos Dam NERFINISHED ⓘ Palo Verde Dam NERFINISHED ⓘ Parker Dam NERFINISHED ⓘ |
| hasLegalBasis |
Arizona statehood act
ⓘ
California statehood act NERFINISHED ⓘ acts of the United States Congress establishing state boundaries ⓘ |
| hasReservoir |
Imperial Reservoir
NERFINISHED
ⓘ
Lake Havasu NERFINISHED ⓘ Parker Reservoir NERFINISHED ⓘ |
| hasTerminus |
California–Arizona–Mexico tripoint
NERFINISHED
ⓘ
California–Nevada–Arizona tripoint NERFINISHED ⓘ |
| jurisdictionOnEastBank | State of Arizona NERFINISHED ⓘ |
| jurisdictionOnWestBank | State of California NERFINISHED ⓘ |
| locatedInRegion | Southwestern United States NERFINISHED ⓘ |
| near |
Colorado Desert
NERFINISHED
ⓘ
Imperial Valley NERFINISHED ⓘ Mojave Desert NERFINISHED ⓘ Sonoran Desert NERFINISHED ⓘ |
| partOf |
borders of Arizona
ⓘ
borders of California ⓘ |
| separates |
Arizona
NERFINISHED
ⓘ
California NERFINISHED ⓘ |
| usedFor |
law enforcement jurisdiction
ⓘ
state taxation jurisdiction ⓘ water rights administration ⓘ |
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–Arizona border Description of subject: The California–Arizona border is the state line along the lower Colorado River that separates California from Arizona in the southwestern United States.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Arizona state line near Yuma