Sand Island Light
E129769
Sand Island Light is a historic lighthouse located on Sand Island in Lake Superior, known for guiding ships through the Apostle Islands region of Wisconsin.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sand Island Light canonical | 3 |
| Michigan Island Light | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1035723 — 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: Sand Island Light Context triple: [Apostle Islands, hasLighthouse, Sand Island Light]
-
A.
Raspberry Island Light
Raspberry Island Light is a historic lighthouse located on Raspberry Island in Wisconsin’s Apostle Islands, guiding navigation on Lake Superior.
-
B.
Devils Island Light
Devils Island Light is a historic lighthouse located on Devils Island in Wisconsin’s Apostle Islands, guiding ships through the waters of Lake Superior.
-
C.
Ten Pound Island Light
Ten Pound Island Light is a historic lighthouse located on Ten Pound Island in Gloucester Harbor, Massachusetts, that once guided maritime traffic into the busy fishing port.
-
D.
Nauset Light
Nauset Light is a historic, red-and-white lighthouse on Cape Cod in Massachusetts, known as an iconic coastal landmark and symbol of the region.
-
E.
Great Point Light
Great Point Light is a historic lighthouse located at the northern tip of Nantucket Island, Massachusetts, guiding vessels through the surrounding coastal waters.
- 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: Sand Island Light Target entity description: Sand Island Light is a historic lighthouse located on Sand Island in Lake Superior, known for guiding ships through the Apostle Islands region of Wisconsin.
-
A.
Raspberry Island Light
Raspberry Island Light is a historic lighthouse located on Raspberry Island in Wisconsin’s Apostle Islands, guiding navigation on Lake Superior.
-
B.
Devils Island Light
Devils Island Light is a historic lighthouse located on Devils Island in Wisconsin’s Apostle Islands, guiding ships through the waters of Lake Superior.
-
C.
Ten Pound Island Light
Ten Pound Island Light is a historic lighthouse located on Ten Pound Island in Gloucester Harbor, Massachusetts, that once guided maritime traffic into the busy fishing port.
-
D.
Nauset Light
Nauset Light is a historic, red-and-white lighthouse on Cape Cod in Massachusetts, known as an iconic coastal landmark and symbol of the region.
-
E.
Great Point Light
Great Point Light is a historic lighthouse located at the northern tip of Nantucket Island, Massachusetts, guiding vessels through the surrounding coastal waters.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
historic lighthouse
ⓘ
lighthouse ⓘ |
| access | by boat ⓘ |
| archipelago | Apostle Islands ⓘ |
| associatedWith |
Apostle Islands National Lakeshore tours
ⓘ
maritime history of Wisconsin ⓘ |
| bodyOfWater | Lake Superior ⓘ |
| category |
Buildings and structures in Bayfield County, Wisconsin
ⓘ
Lighthouses in Wisconsin ⓘ Lighthouses on the Great Lakes ⓘ |
| constructionType | masonry lighthouse ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| environment | freshwater lake ⓘ |
| function | aid to navigation ⓘ |
| hasGallery | yes ⓘ |
| hasKeeperQuarters | yes ⓘ |
| hasLantern | yes ⓘ |
| heritageStatus | historic structure ⓘ |
| historicUse |
navigation aid for commercial shipping
ⓘ
navigation aid for fishing vessels ⓘ |
| isPartOf |
Apostle Islands
ⓘ
surface form:
Apostle Islands National Lakeshore
|
| lightCharacteristic | flashing white ⓘ |
| locatedIn |
Apostle Islands
ⓘ
Lake Superior ⓘ Sand Island ⓘ United States of America ⓘ
surface form:
United States
Wisconsin ⓘ |
| locatedNorthOf | Bayfield, Wisconsin ⓘ |
| locatedOn | shore of Sand Island ⓘ |
| managingOrganization |
Apostle Islands
ⓘ
surface form:
Apostle Islands National Lakeshore
|
| material | brick ⓘ |
| navigationArea | western Lake Superior ⓘ |
| near | other Apostle Islands lighthouses ⓘ |
| operator | United States Coast Guard ⓘ |
| purpose | to guide ships ⓘ |
| regionServed |
Apostle Islands
ⓘ
surface form:
Apostle Islands shipping lanes
Lake Superior maritime traffic ⓘ |
| significance |
historic maritime landmark in Wisconsin
ⓘ
important aid to navigation in Apostle Islands region ⓘ |
| state | Wisconsin ⓘ |
| surroundedBy | Lake Superior ⓘ |
| tourism | popular visitor attraction ⓘ |
| towerShape | conical tower ⓘ |
| visibilityRole |
guiding vessels between Apostle Islands
ⓘ
marking hazards around Sand Island ⓘ |
| waterway | Lake Superior shipping route ⓘ |
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: Sand Island Light Description of subject: Sand Island Light is a historic lighthouse located on Sand Island in Lake Superior, known for guiding ships through the Apostle Islands region of Wisconsin.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Michigan Island Light
subject surface form:
Sand Island (Apostle Islands)
subject surface form:
Sand Island (Apostle Islands)