Point Arena Lighthouse
E415102
Point Arena Lighthouse is a historic coastal beacon on California’s rugged Mendocino Coast, known for its tall tower, dramatic ocean views, and popular tours.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Point Arena Lighthouse canonical | 8 |
| Point Arena Light Station | 1 |
| Point Arena Lighthouse Keepers, Inc. | 1 |
| Point Arena Lighthouse and Museum | 1 |
| Point Arena Lighthouse area | 1 |
| original 1870 Point Arena Lighthouse | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4142441 — 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: Point Arena Lighthouse Context triple: [Point Arena, hasTouristAttraction, Point Arena Lighthouse]
-
A.
Point Reyes Lighthouse
Point Reyes Lighthouse is a historic 19th-century coastal beacon on the Point Reyes headland in California, known for its dramatic cliffside setting and powerful foghorn guiding ships through the often treacherous waters off Marin County.
-
B.
Yaquina Head Lighthouse
Yaquina Head Lighthouse is a historic, still-operating beacon near Newport that is the tallest lighthouse on the Oregon Coast and a popular coastal landmark.
-
C.
Yaquina Bay Lighthouse
Yaquina Bay Lighthouse is a historic 19th-century coastal lighthouse in Newport, Oregon, notable for being one of the oldest standing structures on the Oregon coast and a popular tourist attraction.
-
D.
Heceta Head Lighthouse
Heceta Head Lighthouse is a historic, highly photographed beacon perched on a scenic cliff along the central Oregon Coast, renowned for its powerful light and picturesque setting.
-
E.
Point Sur Lighthouse
Point Sur Lighthouse is a historic 19th-century light station perched on a volcanic rock along California’s Big Sur coast, guiding ships along the rugged Pacific shoreline.
- 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: Point Arena Lighthouse Target entity description: Point Arena Lighthouse is a historic coastal beacon on California’s rugged Mendocino Coast, known for its tall tower, dramatic ocean views, and popular tours.
-
A.
Point Reyes Lighthouse
Point Reyes Lighthouse is a historic 19th-century coastal beacon on the Point Reyes headland in California, known for its dramatic cliffside setting and powerful foghorn guiding ships through the often treacherous waters off Marin County.
-
B.
Yaquina Head Lighthouse
Yaquina Head Lighthouse is a historic, still-operating beacon near Newport that is the tallest lighthouse on the Oregon Coast and a popular coastal landmark.
-
C.
Yaquina Bay Lighthouse
Yaquina Bay Lighthouse is a historic 19th-century coastal lighthouse in Newport, Oregon, notable for being one of the oldest standing structures on the Oregon coast and a popular tourist attraction.
-
D.
Heceta Head Lighthouse
Heceta Head Lighthouse is a historic, highly photographed beacon perched on a scenic cliff along the central Oregon Coast, renowned for its powerful light and picturesque setting.
-
E.
Point Sur Lighthouse
Point Sur Lighthouse is a historic 19th-century light station perched on a volcanic rock along California’s Big Sur coast, guiding ships along the rugged Pacific shoreline.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ |
| architecturalStyle | tapered cylindrical tower ⓘ |
| automationYear | 1977 ⓘ |
| category | Lighthouses in California ⓘ |
| constructionEndYear | 1908 ⓘ |
| constructionStartYear | 1907 ⓘ |
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentLensType | modern rotating beacon ⓘ |
| destroyedPredecessorCause | 1906 San Francisco earthquake ⓘ |
| distanceFromPointArena | about 2 miles north ⓘ |
| focalHeight | about 155 feet ⓘ |
| hasFacility |
museum
ⓘ
parking area ⓘ restrooms ⓘ visitor center ⓘ |
| hasView |
Pacific Ocean
ⓘ
rocky coastline ⓘ whale migration routes ⓘ |
| heritageDesignation |
National Register of Historic Places
ⓘ
surface form:
National Register of Historic Places listing
|
| latitude | approximately 38.954° N ⓘ |
| lightCharacteristic | Flashing white light every 15 seconds ⓘ |
| listedOnNRHPYear | 1991 ⓘ |
| locatedIn |
Mendocino County, California
NERFINISHED
ⓘ
Point Arena ⓘ
surface form:
Point Arena, California
|
| locatedOn |
Mendocino
ⓘ
surface form:
Mendocino Coast
Pacific Ocean ⓘ |
| longitude | approximately 123.739° W ⓘ |
| marking | white tower with black lantern ⓘ |
| material | reinforced concrete ⓘ |
| nearbyCity | Point Arena ⓘ |
| NRHPReferenceNumber | 91001005 ⓘ |
| offers |
gift shop
ⓘ
guided tours ⓘ museum exhibits ⓘ vacation rentals ⓘ |
| openToPublic | yes ⓘ |
| operator | United States Coast Guard ⓘ |
| originalLensType | First-order Fresnel lens ⓘ |
| ownedBy |
Point Arena Lighthouse
self-linksurface differs
ⓘ
surface form:
Point Arena Lighthouse Keepers, Inc.
|
| partOf |
Point Arena Lighthouse
self-linksurface differs
ⓘ
surface form:
Point Arena Light Station
|
| replacedStructure |
Point Arena Lighthouse
self-linksurface differs
ⓘ
surface form:
original 1870 Point Arena Lighthouse
|
| shape | cylindrical tower with balcony and lantern ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| subjectOf | tourism brochures about the Mendocino Coast ⓘ |
| towerHeight |
115 feet
ⓘ
about 35 meters ⓘ |
| yearBuilt | 1908 ⓘ |
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: Point Arena Lighthouse Description of subject: Point Arena Lighthouse is a historic coastal beacon on California’s rugged Mendocino Coast, known for its tall tower, dramatic ocean views, and popular tours.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Point Arena Lighthouse Keepers, Inc.
this entity surface form:
original 1870 Point Arena Lighthouse
this entity surface form:
Point Arena Light Station
California Coastal National Monument (Point Arena-Stornetta Unit)
→
adjacentTo
→
Point Arena Lighthouse
ⓘ
this entity surface form:
Point Arena Lighthouse area
California Coastal National Monument (Point Arena-Stornetta Unit)
→
hasViewOf
→
Point Arena Lighthouse
ⓘ
this entity surface form:
Point Arena Lighthouse and Museum