Derby Wharf Light Station
E60146
Derby Wharf Light Station is a small historic lighthouse in Salem, Massachusetts, that once guided maritime traffic into Salem Harbor and now serves as part of the Salem Maritime National Historic Site.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Derby Wharf Light Station canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T471538 — 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: Derby Wharf Light Station Context triple: [Salem Maritime National Historic Site, hasPart, Derby Wharf Light Station]
-
A.
Elie Lighthouse
Elie Lighthouse is a coastal navigational beacon near the village of Elie in Fife, Scotland, guiding ships along the Firth of Forth.
-
B.
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.
-
C.
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.
-
D.
Eastern Point Lighthouse
Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
-
E.
Big Red Lighthouse
Big Red Lighthouse is a historic, bright-red navigational beacon at the channel entrance to Lake Michigan in Holland, Michigan, and a well-known local icon.
- 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: Derby Wharf Light Station Target entity description: Derby Wharf Light Station is a small historic lighthouse in Salem, Massachusetts, that once guided maritime traffic into Salem Harbor and now serves as part of the Salem Maritime National Historic Site.
-
A.
Elie Lighthouse
Elie Lighthouse is a coastal navigational beacon near the village of Elie in Fife, Scotland, guiding ships along the Firth of Forth.
-
B.
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.
-
C.
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.
-
D.
Eastern Point Lighthouse
Eastern Point Lighthouse is a historic coastal beacon in Gloucester, Massachusetts, guiding ships at the entrance to Gloucester Harbor on the Atlantic Ocean.
-
E.
Big Red Lighthouse
Big Red Lighthouse is a historic, bright-red navigational beacon at the channel entrance to Lake Michigan in Holland, Michigan, and a well-known local icon.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
lighthouse ⓘ |
| access | by foot along Derby Wharf ⓘ |
| associatedWith | Salem’s maritime trade history ⓘ |
| category |
Buildings and structures in Salem, Massachusetts
ⓘ
Lighthouses in Massachusetts ⓘ Tourist attractions in Salem, Massachusetts ⓘ Transportation in Essex County, Massachusetts ⓘ |
| city | Salem, Massachusetts ⓘ |
| constructionMaterial | brick ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Essex County, Massachusetts ⓘ |
| currentUse |
aid to navigation
ⓘ
historic exhibit ⓘ |
| focalHeight | about 25 feet ⓘ |
| function | navigational aid ⓘ |
| height | about 20 feet ⓘ |
| heritageDesignation | contributing property of Salem Maritime National Historic Site ⓘ |
| historicUse | guiding ships into a major early American seaport ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| locatedIn | Salem Harbor ⓘ |
| locatedOn | Derby Wharf ⓘ |
| location | Salem, Massachusetts ⓘ |
| managedBy | National Park Service ⓘ |
| marking | white tower with red lantern roof ⓘ |
| near | downtown Salem, Massachusetts ⓘ |
| openToPublic | yes ⓘ |
| operator | United States Coast Guard ⓘ |
| owner |
United States government
ⓘ
surface form:
United States federal government
|
| partOf | Salem Maritime National Historic Site ⓘ |
| powerSource | electric light ⓘ |
| purpose | to guide maritime traffic into Salem Harbor ⓘ |
| region | New England ⓘ |
| state | Massachusetts ⓘ |
| status | active aid to navigation ⓘ |
| tourism | popular visitor attraction within Salem Maritime National Historic Site ⓘ |
| towerShape | square tower ⓘ |
| waterbody | Atlantic Ocean ⓘ |
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: Derby Wharf Light Station Description of subject: Derby Wharf Light Station is a small historic lighthouse in Salem, Massachusetts, that once guided maritime traffic into Salem Harbor and now serves as part of the Salem Maritime National Historic Site.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.