Los Angeles (served via imported Colorado River water)
E1012928
Los Angeles is a major Southern California metropolis whose vast population and economy rely heavily on imported water from the distant Colorado River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Los Angeles (served via imported Colorado River water) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12969827 — 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: Los Angeles (served via imported Colorado River water) Context triple: [Colorado River Basin, containsCity, Los Angeles (served via imported Colorado River water)]
-
A.
Tujunga, Los Angeles
Tujunga is a neighborhood in the northeastern San Fernando Valley region of Los Angeles known for its suburban character, foothill setting, and proximity to the Verdugo and San Gabriel Mountains.
-
B.
Greater Los Angeles hydrologic system
The Greater Los Angeles hydrologic system is the interconnected network of rivers, arroyos, watersheds, and engineered water infrastructure that manages surface and groundwater flow across the Los Angeles metropolitan region.
-
C.
Riverside, California
Riverside, California is a major city in Southern California’s Inland Empire region, known as the birthplace of the state’s citrus industry and home to a campus of the University of California system.
-
D.
Los Angeles River
The Los Angeles River is a largely channelized urban waterway running through Los Angeles County that has played a central role in the region’s history, development, and ongoing revitalization efforts.
-
E.
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is a regional wholesale water agency that imports, manages, and distributes water supplies to numerous cities and local water districts across Southern 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: Los Angeles (served via imported Colorado River water) Target entity description: Los Angeles is a major Southern California metropolis whose vast population and economy rely heavily on imported water from the distant Colorado River.
-
A.
Tujunga, Los Angeles
Tujunga is a neighborhood in the northeastern San Fernando Valley region of Los Angeles known for its suburban character, foothill setting, and proximity to the Verdugo and San Gabriel Mountains.
-
B.
Greater Los Angeles hydrologic system
The Greater Los Angeles hydrologic system is the interconnected network of rivers, arroyos, watersheds, and engineered water infrastructure that manages surface and groundwater flow across the Los Angeles metropolitan region.
-
C.
Riverside, California
Riverside, California is a major city in Southern California’s Inland Empire region, known as the birthplace of the state’s citrus industry and home to a campus of the University of California system.
-
D.
Los Angeles River
The Los Angeles River is a largely channelized urban waterway running through Los Angeles County that has played a central role in the region’s history, development, and ongoing revitalization efforts.
-
E.
Metropolitan Water District of Southern California
The Metropolitan Water District of Southern California is a regional wholesale water agency that imports, manages, and distributes water supplies to numerous cities and local water districts across Southern California.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
city
ⓘ
metropolis ⓘ |
| climate | semi‑arid ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| dependsOn | imported Colorado River water ⓘ |
| hasEconomicDependencyOn | imported Colorado River water ⓘ |
| hasEnvironmentalImpact | demands on Colorado River resources ⓘ |
| hasImportedWaterSource | Colorado River ⓘ |
| hasInfrastructureDependency |
Colorado River Aqueduct system
ⓘ
linked to:
Colorado River Aqueduct
|
| hasPopulationCharacteristic | large urban population dependent on imported water ⓘ |
| hasUrbanCharacteristic |
large metropolitan area in arid climate
ⓘ
water‑intensive economy ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Los Angeles County ⓘ United States ⓘ
linked to:
United States of America
|
| region | Southern California ⓘ |
| reliesOn | Metropolitan Water District of Southern California for imported water ⓘ |
| requires |
imported water to support economy
ⓘ
imported water to support population ⓘ |
| servedByUtility |
Los Angeles Department of Water and Power
ⓘ
Metropolitan Water District of Southern California ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| waterManagementIssue |
long‑distance water conveyance
ⓘ
reliance on distant water sources ⓘ vulnerability to Colorado River shortages ⓘ |
| waterPolicyConcern |
Colorado River allocation
ⓘ
drought resilience ⓘ long‑term sustainability of imported water supplies ⓘ |
| waterSourceBasin | Colorado River Basin ⓘ |
| waterSourceDistance | distant river basin ⓘ |
| waterSupplyInfrastructure | Colorado River Aqueduct ⓘ |
| waterSupplyType | imported water ⓘ |
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: Los Angeles (served via imported Colorado River water) Description of subject: Los Angeles is a major Southern California metropolis whose vast population and economy rely heavily on imported water from the distant Colorado River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.