Fort Williams
E565280
Fort Williams was a former U.S. Army coastal defense fort in Cape Elizabeth, Maine, that played a key role in protecting Portland Harbor before being decommissioned and converted into a public park.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fort Williams canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6022863 — 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: Fort Williams Context triple: [Fort Williams Park, namedAfter, Fort Williams]
-
A.
Chesuncook
Chesuncook is a remote village and lake area in northern Maine known for its historic logging heritage and wilderness recreation.
-
B.
Taghkanic
Taghkanic is a rural town in Columbia County, New York, known for its scenic landscapes and small-town character in the Hudson Valley region.
-
C.
Mount Lafayette
Mount Lafayette is a prominent 5,249-foot summit in New Hampshire’s Franconia Range, popular with hikers for its alpine views and challenging trails.
-
D.
Mount Deborah
Mount Deborah is a prominent, heavily glaciated peak in the eastern Alaska Range known for its steep faces and challenging mountaineering routes.
-
E.
Mount Willard
Mount Willard is a popular, relatively short hike in New Hampshire’s White Mountains known for its dramatic cliff-top views over Crawford Notch.
- 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: Fort Williams Target entity description: Fort Williams was a former U.S. Army coastal defense fort in Cape Elizabeth, Maine, that played a key role in protecting Portland Harbor before being decommissioned and converted into a public park.
-
A.
Chesuncook
Chesuncook is a remote village and lake area in northern Maine known for its historic logging heritage and wilderness recreation.
-
B.
Taghkanic
Taghkanic is a rural town in Columbia County, New York, known for its scenic landscapes and small-town character in the Hudson Valley region.
-
C.
Mount Lafayette
Mount Lafayette is a prominent 5,249-foot summit in New Hampshire’s Franconia Range, popular with hikers for its alpine views and challenging trails.
-
D.
Mount Deborah
Mount Deborah is a prominent, heavily glaciated peak in the eastern Alaska Range known for its steep faces and challenging mountaineering routes.
-
E.
Mount Willard
Mount Willard is a popular, relatively short hike in New Hampshire’s White Mountains known for its dramatic cliff-top views over Crawford Notch.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
coastal defense fort
ⓘ
former military fort ⓘ |
| built | to defend Portland, Maine ⓘ |
| constructionBegan | late 19th century ⓘ |
| controlledBy | United States Army Coast Artillery Corps NERFINISHED ⓘ |
| convertedTo | public park ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentName | Fort Williams Park NERFINISHED ⓘ |
| currentUse | public park ⓘ |
| deactivated | 1940s ⓘ |
| decommissioned | mid-20th century ⓘ |
| hasActivity |
historical tourism
ⓘ
recreation ⓘ sightseeing ⓘ |
| hasFacility |
picnic areas
ⓘ
sports fields ⓘ walking trails ⓘ |
| hasFunction |
coastal defense
ⓘ
harbor defense ⓘ |
| hasLandmark | Portland Head Light NERFINISHED ⓘ |
| hasRemnant |
artillery emplacements
ⓘ
barracks foundations ⓘ support buildings remains ⓘ |
| hasStructure |
former gun batteries
ⓘ
military ruins ⓘ |
| hasView | Atlantic Ocean NERFINISHED ⓘ |
| heritageStatus | historic military site ⓘ |
| locatedIn |
Cape Elizabeth, Maine
NERFINISHED
ⓘ
Cumberland County, Maine NERFINISHED ⓘ Maine NERFINISHED ⓘ New England ⓘ |
| locatedNear | Portland Harbor NERFINISHED ⓘ |
| locatedOn | Atlantic coast of the United States ⓘ |
| namedAfter | Brevet Major General Seth Williams NERFINISHED ⓘ |
| nearbyCity | Portland, Maine NERFINISHED ⓘ |
| openToPublic | true ⓘ |
| operatedBy | United States Army ⓘ |
| overlooks | Casco Bay NERFINISHED ⓘ |
| ownedBy | Town of Cape Elizabeth NERFINISHED ⓘ |
| partOf | Harbor Defenses of Portland NERFINISHED ⓘ |
| protects | Portland Harbor NERFINISHED ⓘ |
| region | Casco Bay region NERFINISHED ⓘ |
| significance | major element of Portland coastal defenses ⓘ |
| touristAttraction | true ⓘ |
| usedDuring |
Spanish–American War
NERFINISHED
ⓘ
World War I NERFINISHED ⓘ World War II ⓘ |
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: Fort Williams Description of subject: Fort Williams was a former U.S. Army coastal defense fort in Cape Elizabeth, Maine, that played a key role in protecting Portland Harbor before being decommissioned and converted into a public park.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.