Cape Mendocino
E12720
Cape Mendocino is a remote, rugged headland on California’s northern coast known as the state’s westernmost point and a seismically active area influenced by major tectonic plate boundaries.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Cape Mendocino canonical | 7 |
| Mendocino Triple Junction | 3 |
| Cape Mendocino area | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T110901 — 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: Cape Mendocino Context triple: [San Andreas Fault, terminusNear, Cape Mendocino]
-
A.
Yaquina Bay
Yaquina Bay is a coastal estuary on the central Oregon coast known for its rich marine ecosystems, fisheries, and role as a hub for marine research and recreation.
-
B.
Juan de Fuca Plate
The Juan de Fuca Plate is a small oceanic tectonic plate off the Pacific Northwest coast whose subduction beneath North America drives significant volcanic and seismic activity in the region.
-
C.
Emerald Bay
Emerald Bay is a scenic, glacier-carved inlet on Lake Tahoe renowned for its turquoise waters, surrounding granite peaks, and status as one of California’s most photographed natural landmarks.
-
D.
Paso de San Francisco
Paso de San Francisco is a high-altitude Andean mountain pass on the Argentina–Chile border, known as a key access route to the Ojos del Salado volcano and surrounding desert landscapes.
-
E.
Port of Portland
The Port of Portland is a major Pacific Northwest seaport and transportation hub in Oregon that handles international maritime trade, cargo, and regional logistics.
- 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: Cape Mendocino Target entity description: Cape Mendocino is a remote, rugged headland on California’s northern coast known as the state’s westernmost point and a seismically active area influenced by major tectonic plate boundaries.
-
A.
Yaquina Bay
Yaquina Bay is a coastal estuary on the central Oregon coast known for its rich marine ecosystems, fisheries, and role as a hub for marine research and recreation.
-
B.
Juan de Fuca Plate
The Juan de Fuca Plate is a small oceanic tectonic plate off the Pacific Northwest coast whose subduction beneath North America drives significant volcanic and seismic activity in the region.
-
C.
Emerald Bay
Emerald Bay is a scenic, glacier-carved inlet on Lake Tahoe renowned for its turquoise waters, surrounding granite peaks, and status as one of California’s most photographed natural landmarks.
-
D.
Paso de San Francisco
Paso de San Francisco is a high-altitude Andean mountain pass on the Argentina–Chile border, known as a key access route to the Ojos del Salado volcano and surrounding desert landscapes.
-
E.
Port of Portland
The Port of Portland is a major Pacific Northwest seaport and transportation hub in Oregon that handles international maritime trade, cargo, and regional logistics.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
cape
ⓘ
geographic feature ⓘ headland ⓘ lighthouse ⓘ |
| climate | cool marine climate ⓘ |
| coastType | rocky coast ⓘ |
| coordinateLatitude | 40.440° N ⓘ |
| coordinateLongitude | 124.414° W ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| distanceTo | about 200 miles north of San Francisco ⓘ |
| earthquakeSequence | April 1992 magnitude 7.2 mainshock ⓘ |
| elevation | steep coastal bluffs ⓘ |
| geologicalFeature | active fault zones ⓘ |
| geologicalProvince | North Coast Ranges ⓘ |
| hasStructure | Cape Mendocino Lighthouse ⓘ |
| hazard |
earthquake risk
ⓘ
tsunami risk ⓘ |
| historicalEvent | 1992 Cape Mendocino earthquakes ⓘ |
| is |
one of the most seismically active areas in California
ⓘ
westernmost point of California ⓘ |
| knownFor |
remote location
ⓘ
rugged coastline ⓘ strong earthquakes ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Humboldt County, California ⓘ
linked to:
Humboldt County
|
| locatedNear | Cape Mendocino ⓘ |
| locatedOn | Pacific Ocean ⓘ |
| namedAfter |
Mendocino County (indirectly via early exploration naming)
ⓘ
linked to:
Mendocino County
|
| nameLanguage | English ⓘ |
| near |
Eel River Basin
ⓘ
Mendocino Triple Junction ⓘ
linked to:
Cape Mendocino
Petrolia, California ⓘ |
| oceanCurrent | California Current ⓘ |
| offshoreFeature |
continental shelf
ⓘ
submarine canyons ⓘ |
| partOf |
Lost Coast region
ⓘ
Northern California coast ⓘ
linked to:
North Coast of California
|
| protectedAreaNearby | King Range National Conservation Area ⓘ |
| region | Pacific Northwest margin of California ⓘ |
| subjectTo |
coastal fog
ⓘ
strong coastal winds ⓘ |
| tectonicPlateBoundary |
Gorda Plate
ⓘ
North American Plate ⓘ Pacific Plate ⓘ |
| tectonicSetting | near the Mendocino Triple Junction ⓘ |
| usedFor | maritime navigation ⓘ |
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: Cape Mendocino Description of subject: Cape Mendocino is a remote, rugged headland on California’s northern coast known as the state’s westernmost point and a seismically active area influenced by major tectonic plate boundaries.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Cape Mendocino
linked to: Cape Mendocino
subject linked to:
Cape Mendocino
linked to: Cape Mendocino
linked to: Cape Mendocino
linked to: Cape Mendocino