Rockland Breakwater Light
E762831
Rockland Breakwater Light is a historic lighthouse at the end of a long granite breakwater in Rockland Harbor, Maine, guiding vessels along the Midcoast Maine shoreline.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Rockland Breakwater Light canonical | 3 |
| Rockland Breakwater | 1 |
| Rockland Harbor breakwater | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8721363 — 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: Rockland Breakwater Light Context triple: [Midcoast Maine, hasPart, Rockland Breakwater Light]
-
A.
Saybrook Breakwater Light
Saybrook Breakwater Light is a historic offshore lighthouse marking the mouth of the Connecticut River on Long Island Sound.
-
B.
Marblehead Light
Marblehead Light is a historic lighthouse in Marblehead, Massachusetts, that aids navigation in Massachusetts Bay and is notable for its skeletal iron tower design.
-
C.
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.
-
D.
Owls Head Light
Owls Head Light is a historic lighthouse in coastal Maine, known for guiding ships into Rockland Harbor and serving as a popular scenic and tourist landmark.
-
E.
Long Point Light
Long Point Light is a historic lighthouse marking the entrance to Provincetown Harbor at the tip of Cape Cod, Massachusetts.
- 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: Rockland Breakwater Light Target entity description: Rockland Breakwater Light is a historic lighthouse at the end of a long granite breakwater in Rockland Harbor, Maine, guiding vessels along the Midcoast Maine shoreline.
-
A.
Saybrook Breakwater Light
Saybrook Breakwater Light is a historic offshore lighthouse marking the mouth of the Connecticut River on Long Island Sound.
-
B.
Marblehead Light
Marblehead Light is a historic lighthouse in Marblehead, Massachusetts, that aids navigation in Massachusetts Bay and is notable for its skeletal iron tower design.
-
C.
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.
-
D.
Owls Head Light
Owls Head Light is a historic lighthouse in coastal Maine, known for guiding ships into Rockland Harbor and serving as a popular scenic and tourist landmark.
-
E.
Long Point Light
Long Point Light is a historic lighthouse marking the entrance to Provincetown Harbor at the tip of Cape Cod, Massachusetts.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
lighthouse ⓘ |
| accessibleBy | granite breakwater walkway ⓘ |
| automated | yes ⓘ |
| automationYear | 1965 ⓘ |
| city | Rockland NERFINISHED ⓘ |
| constructionMaterial |
brick
ⓘ
granite foundation ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Knox County NERFINISHED ⓘ |
| foundation | granite breakwater ⓘ |
| hasAlternateName | Rockland Harbor Breakwater Light NERFINISHED ⓘ |
| hasCategory |
Lighthouses in Maine
ⓘ
Tourist attractions in Knox County, Maine ⓘ Transportation buildings and structures in Knox County, Maine ⓘ |
| hasFeature |
attached keeper’s house
ⓘ
fog signal building ⓘ lantern room ⓘ |
| heritageDesignation |
National Register of Historic Places
ⓘ
surface form:
National Register of Historic Places listing
|
| lightCharacteristic | flashing white light ⓘ |
| listedOn | National Register of Historic Places ⓘ |
| locatedIn |
Knox County, Maine
NERFINISHED
ⓘ
Maine NERFINISHED ⓘ Rockland Harbor NERFINISHED ⓘ Rockland, Maine NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInBodyOfWater | Rockland Harbor NERFINISHED ⓘ |
| locatedNear | Penobscot Bay NERFINISHED ⓘ |
| locatedOn | Rockland Breakwater NERFINISHED ⓘ |
| locatedOnCoastOf | Midcoast Maine NERFINISHED ⓘ |
| managedBy | United States Coast Guard NERFINISHED ⓘ |
| marking | white tower with red roof ⓘ |
| navigationSystem | United States Aids to Navigation System NERFINISHED ⓘ |
| nrhpListingYear | 1981 ⓘ |
| nrhpReferenceNumber | 81000071 ⓘ |
| nrhpType | building ⓘ |
| openToPublic | yes ⓘ |
| operatedBy | City of Rockland NERFINISHED ⓘ |
| ownedBy | City of Rockland NERFINISHED ⓘ |
| partOf | Rockland Harbor Breakwater Light Station NERFINISHED ⓘ |
| purpose |
aids navigation
ⓘ
guides vessels into Rockland Harbor ⓘ |
| region | New England NERFINISHED ⓘ |
| state | Maine ⓘ |
| towerShape | square tower ⓘ |
| yearEstablished | 1902 ⓘ |
| yearLit | 1902 ⓘ |
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: Rockland Breakwater Light Description of subject: Rockland Breakwater Light is a historic lighthouse at the end of a long granite breakwater in Rockland Harbor, Maine, guiding vessels along the Midcoast Maine shoreline.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Rockland Harbor
this entity surface form:
Rockland Breakwater
subject surface form:
Rockland Harbor
subject surface form:
Rockland Harbor
this entity surface form:
Rockland Harbor breakwater