Portland Bill lighthouse

E146662

coastal beacon lighthouse

Portland Bill Lighthouse is a prominent coastal beacon on the Isle of Portland in Dorset, England, renowned for guiding ships through the hazardous waters of the English Channel.

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All labels observed (2)

Label	Occurrences
Portland Bill Lighthouse	6
Portland Bill lighthouse canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T1260636 — 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: Portland Bill lighthouse
Context triple: [Portland, Dorset, England, knownFor, Portland Bill lighthouse]

A. 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.
B. Cape Meares Lighthouse
Cape Meares Lighthouse is a historic, cliff-top beacon on the northern Oregon Coast known for its distinctive short tower and panoramic views of the Pacific Ocean.
C. 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.
D. Umpqua River Lighthouse
Umpqua River Lighthouse is a historic coastal beacon in Oregon known for its distinctive red-and-white flashing Fresnel lens and scenic views over the Pacific Ocean.
E. 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.
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: Portland Bill lighthouse
Target entity description: Portland Bill Lighthouse is a prominent coastal beacon on the Isle of Portland in Dorset, England, renowned for guiding ships through the hazardous waters of the English Channel.

A. 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.
B. Cape Meares Lighthouse
Cape Meares Lighthouse is a historic, cliff-top beacon on the northern Oregon Coast known for its distinctive short tower and panoramic views of the Pacific Ocean.
C. 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.
D. Umpqua River Lighthouse
Umpqua River Lighthouse is a historic coastal beacon in Oregon known for its distinctive red-and-white flashing Fresnel lens and scenic views over the Pacific Ocean.
E. 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.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	coastal beacon ⓘ lighthouse ⓘ
associatedWith	hazardous tidal race off Portland Bill ⓘ
automated	yes ⓘ
automationYear	1996 ⓘ
category	Buildings and structures on the Isle of Portland ⓘ Grade II listed lighthouses ⓘ Lighthouses in Dorset ⓘ
constructionMaterial	stone ⓘ
country	United Kingdom ⓘ
focalHeight	approximately 43 metres above sea level ⓘ
function	aid to navigation ⓘ
hasBalcony	yes ⓘ
hasFogSignal	yes ⓘ
hasLantern	yes ⓘ
hasVisitorCentre	yes ⓘ
height	approximately 41 metres ⓘ
heritageStatus	Grade II listed building ⓘ
lightCharacteristic	group flashing white light ⓘ
lightRange	approximately 25 nautical miles ⓘ
locatedIn	Dorset ⓘ England ⓘ English Channel ⓘ Isle of Portland ⓘ Portland Bill ⓘ
locatedOn	southern tip of the Isle of Portland ⓘ
locatedOnCoastOf	Jurassic Coast ⓘ
managedBy	Trinity House ⓘ
marking	white tower with a broad red horizontal band ⓘ
navigationalNumber	A0004 (Trinity House number, approximate/representative) ⓘ
near	Portland Bill Observatory ⓘ Pulpit Rock ⓘ
offers	guided tours ⓘ
opened	1906 ⓘ
operator	Trinity House ⓘ
ownedBy	Trinity House ⓘ
powerSource	electric ⓘ
previousLightStations	Old Higher Lighthouse ⓘ Old Lower Lighthouse ⓘ
purpose	to guide ships through hazardous waters of the English Channel ⓘ
region	southwest England ⓘ surface form: South West England
replaced	Old Higher Lighthouse ⓘ Old Lower Lighthouse ⓘ
serves	shipping in the English Channel ⓘ
towerShape	cylindrical tower with balcony and lantern ⓘ
UNESCOWorldHeritageContext	near the Jurassic Coast World Heritage Site ⓘ
yearLit	1906 ⓘ

How these facts were elicited