Ustka lighthouse
E530793
Ustka lighthouse is a historic navigational tower on the Baltic Sea coast in northern Poland, guiding ships entering the port town of Ustka.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ustka lighthouse canonical | 2 |
| Ustka Lighthouse | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5522582 — 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: Ustka lighthouse Context triple: [Port of Ustka, hasNearbyInfrastructure, Ustka lighthouse]
-
A.
Jastarnia lighthouse
Jastarnia lighthouse is a coastal navigational beacon on Poland’s Hel Peninsula, guiding Baltic Sea maritime traffic and serving as a local tourist attraction.
-
B.
Piran lighthouse
Piran lighthouse is a historic coastal beacon located at the tip of the Piran peninsula on Slovenia’s Adriatic coast, serving as a prominent maritime and tourist landmark.
-
C.
Ristna Lighthouse
Ristna Lighthouse is a historic coastal beacon located on the western tip of Hiiumaa Island in Estonia, guiding ships in the Baltic Sea.
-
D.
Tokarevsky Lighthouse
Tokarevsky Lighthouse is a historic coastal beacon near Vladivostok, Russia, known for guiding ships through the approaches to the city’s harbor on the Sea of Japan.
-
E.
Kõpu Lighthouse
Kõpu Lighthouse is one of the oldest continuously operating lighthouses in the world, located on the Estonian island of Hiiumaa and serving as a historic navigational landmark in the Baltic Sea.
- 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: Ustka lighthouse Target entity description: Ustka lighthouse is a historic navigational tower on the Baltic Sea coast in northern Poland, guiding ships entering the port town of Ustka.
-
A.
Jastarnia lighthouse
Jastarnia lighthouse is a coastal navigational beacon on Poland’s Hel Peninsula, guiding Baltic Sea maritime traffic and serving as a local tourist attraction.
-
B.
Piran lighthouse
Piran lighthouse is a historic coastal beacon located at the tip of the Piran peninsula on Slovenia’s Adriatic coast, serving as a prominent maritime and tourist landmark.
-
C.
Ristna Lighthouse
Ristna Lighthouse is a historic coastal beacon located on the western tip of Hiiumaa Island in Estonia, guiding ships in the Baltic Sea.
-
D.
Tokarevsky Lighthouse
Tokarevsky Lighthouse is a historic coastal beacon near Vladivostok, Russia, known for guiding ships through the approaches to the city’s harbor on the Sea of Japan.
-
E.
Kõpu Lighthouse
Kõpu Lighthouse is one of the oldest continuously operating lighthouses in the world, located on the Estonian island of Hiiumaa and serving as a historic navigational landmark in the Baltic Sea.
- F. None of above. chosen
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
lighthouse
ⓘ
navigational aid ⓘ |
| access | staircase inside tower ⓘ |
| architecturalStyle | brick coastal lighthouse ⓘ |
| category |
Buildings and structures in Pomeranian Voivodeship
ⓘ
Lighthouses in Poland ⓘ Tourist attractions in Pomeranian Voivodeship ⓘ |
| constructionStart | late 19th century ⓘ |
| country | Poland ⓘ |
| function | guides ships entering the port of Ustka ⓘ |
| hasGallery | yes ⓘ |
| hasLantern | yes ⓘ |
| hasViewOf |
Baltic Sea
ⓘ
port of Ustka ⓘ
linked to:
Port of Ustka
|
| height | approximately 19.5 metres ⓘ |
| heritageStatus | historic structure ⓘ |
| inception | 1892 ⓘ |
| lightCharacteristic |
isophase light
ⓘ
white light ⓘ |
| lightRange | approximately 18 nautical miles ⓘ |
| locatedAtMouthOf |
port of Ustka
ⓘ
linked to:
Port of Ustka
|
| locatedIn | Ustka ⓘ |
| locatedInAdministrativeTerritorialEntity | Pomeranian Voivodeship ⓘ |
| locatedInRegion | northern Poland ⓘ |
| locatedNear |
Ustka beach
ⓘ
linked to:
Ustka seaside promenade
|
| locatedOn | Baltic Sea ⓘ |
| locatedOnWaterbody |
Baltic Sea coast
ⓘ
linked to:
Baltic Sea coast region
|
| materialUsed | brick ⓘ |
| nearbyCity | Słupsk ⓘ |
| openToPublic | yes ⓘ |
| operatedBy | Polish maritime authorities ⓘ |
| ownedBy | State Treasury of Poland ⓘ |
| partOf | Polish system of coastal lighthouses ⓘ |
| status | active ⓘ |
| towerShape | cylindrical tower ⓘ |
| usedFor |
maritime navigation
ⓘ
tourism ⓘ |
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: Ustka lighthouse Description of subject: Ustka lighthouse is a historic navigational tower on the Baltic Sea coast in northern Poland, guiding ships entering the port town of Ustka.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Ustka lighthouse