Overfalls Shoal lightship station
E659192
Overfalls Shoal lightship station was a navigational lightship station marking the hazardous Overfalls Shoal off the Delaware coast, serving as an important aid to maritime traffic.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Overfalls Shoal lightship station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7353808 — 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: Overfalls Shoal lightship station Context triple: [Lightship Overfalls, namedAfter, Overfalls Shoal lightship station]
-
A.
Mission Point Light
Mission Point Light is a historic lighthouse located at the tip of Old Mission Peninsula in Grand Traverse Bay, Michigan, known for its picturesque setting and 19th-century architecture.
-
B.
Blackwell Island Light
Blackwell Island Light is a historic 19th-century stone lighthouse located at the northern tip of Roosevelt Island in New York City, built to aid navigation on the East River.
-
C.
Robbins Reef Lighthouse
Robbins Reef Lighthouse is a historic offshore beacon in New York Harbor that has guided ships since the 19th century and is famed for its distinctive “sparkplug” design and the story of its longtime keeper, Kate Walker.
-
D.
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.
-
E.
Cape Schanck Lighthouse
Cape Schanck Lighthouse is a historic 19th-century coastal lighthouse on Victoria’s Mornington Peninsula, known for its dramatic cliff-top setting and maritime heritage.
- 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: Overfalls Shoal lightship station Target entity description: Overfalls Shoal lightship station was a navigational lightship station marking the hazardous Overfalls Shoal off the Delaware coast, serving as an important aid to maritime traffic.
-
A.
Mission Point Light
Mission Point Light is a historic lighthouse located at the tip of Old Mission Peninsula in Grand Traverse Bay, Michigan, known for its picturesque setting and 19th-century architecture.
-
B.
Blackwell Island Light
Blackwell Island Light is a historic 19th-century stone lighthouse located at the northern tip of Roosevelt Island in New York City, built to aid navigation on the East River.
-
C.
Robbins Reef Lighthouse
Robbins Reef Lighthouse is a historic offshore beacon in New York Harbor that has guided ships since the 19th century and is famed for its distinctive “sparkplug” design and the story of its longtime keeper, Kate Walker.
-
D.
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.
-
E.
Cape Schanck Lighthouse
Cape Schanck Lighthouse is a historic 19th-century coastal lighthouse on Victoria’s Mornington Peninsula, known for its dramatic cliff-top setting and maritime heritage.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
lightship station
ⓘ
navigational aid ⓘ |
| aidToNavigationType | lightship ⓘ |
| associatedWith |
Overfalls Lightship LV-101
ⓘ
Overfalls Lightship LV-118 ⓘ United States Lighthouse Service lightship fleet ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| hazardTypeMarked | submerged sand shoal ⓘ |
| importance | important aid to maritime traffic off Delaware coast ⓘ |
| locatedIn |
Atlantic Ocean
ⓘ
Delaware Bay ⓘ |
| locatedNear |
mouth of Delaware Bay
ⓘ
shipping approaches to Delaware River ⓘ |
| locatedOffCoastOf | Delaware ⓘ |
| markingType | shoal ⓘ |
| navigationalHazardMarked | Overfalls Shoal ⓘ |
| navigationRole | marked approach routes to Delaware Bay and Delaware River ports ⓘ |
| nearbyPortsServed |
Port of Philadelphia
ⓘ
ports along Delaware River and Bay ⓘ |
| operatedBy |
United States Coast Guard
ⓘ
United States Lighthouse Service ⓘ |
| purpose |
to aid maritime navigation
ⓘ
to mark Overfalls Shoal ⓘ to warn ships of hazardous shoals ⓘ |
| regionServed | Mid-Atlantic coast of the United States ⓘ |
| servedAs | offshore lightship position ⓘ |
| status | former lightship station ⓘ |
| trafficServed |
coastal traffic
ⓘ
commercial shipping ⓘ vessels entering Delaware Bay ⓘ |
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: Overfalls Shoal lightship station Description of subject: Overfalls Shoal lightship station was a navigational lightship station marking the hazardous Overfalls Shoal off the Delaware coast, serving as an important aid to maritime traffic.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.