Fort Ethan Allen (site)
E675636
Fort Ethan Allen (site) is a former Union Army fortification in Arlington, Virginia, that was part of the ring of defenses built to protect Washington, D.C., during the American Civil War.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fort Ethan Allen (site) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7586377 — 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 Ethan Allen (site) Context triple: [Civil War Defenses of Washington, hasPart, Fort Ethan Allen (site)]
-
A.
Fort Constitution State Historic Site
Fort Constitution State Historic Site is a coastal fortification and public historic area in New Castle, New Hampshire, that preserves centuries of military and maritime history at the mouth of the Piscataqua River.
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B.
Fort Loyal
Fort Loyal was a 17th-century English colonial fortification in what is now Portland, Maine, that played a key role in regional conflicts between European settlers and Native American groups.
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C.
Crown Point State Historic Site
Crown Point State Historic Site is a historic park in New York that preserves the ruins of significant 18th-century French and British fortifications on Lake Champlain.
-
D.
Fort William Henry Museum
Fort William Henry Museum is a reconstructed 18th-century British fort and historical museum in Lake George, New York, interpreting French and Indian War history through exhibits and reenactments.
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E.
Fort Point Cove
Fort Point Cove is a small waterfront inlet in Boston, Massachusetts, situated near the Fort Point Channel and associated with the city’s historic harbor area.
- 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 Ethan Allen (site) Target entity description: Fort Ethan Allen (site) is a former Union Army fortification in Arlington, Virginia, that was part of the ring of defenses built to protect Washington, D.C., during the American Civil War.
-
A.
Fort Constitution State Historic Site
Fort Constitution State Historic Site is a coastal fortification and public historic area in New Castle, New Hampshire, that preserves centuries of military and maritime history at the mouth of the Piscataqua River.
-
B.
Fort Loyal
Fort Loyal was a 17th-century English colonial fortification in what is now Portland, Maine, that played a key role in regional conflicts between European settlers and Native American groups.
-
C.
Crown Point State Historic Site
Crown Point State Historic Site is a historic park in New York that preserves the ruins of significant 18th-century French and British fortifications on Lake Champlain.
-
D.
Fort William Henry Museum
Fort William Henry Museum is a reconstructed 18th-century British fort and historical museum in Lake George, New York, interpreting French and Indian War history through exhibits and reenactments.
-
E.
Fort Point Cove
Fort Point Cove is a small waterfront inlet in Boston, Massachusetts, situated near the Fort Point Channel and associated with the city’s historic harbor area.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
Civil War fortification
ⓘ
Union Army fort ⓘ historic site ⓘ |
| builtFor | protection of Washington, D.C. ⓘ |
| category |
American Civil War forts
ⓘ
Historic sites in Arlington County, Virginia ⓘ Military facilities in Virginia ⓘ |
| conflict | American Civil War ⓘ |
| controlledBy | Union Army ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| currentUse |
historic park
ⓘ
public open space ⓘ |
| garrison |
Union Army troops
ⓘ
linked to:
Union Army
|
| hasMarker | historical interpretive signs ⓘ |
| hasPart |
artillery emplacements
ⓘ
ditches ⓘ earthwork fortifications ⓘ parapets ⓘ rifle trenches ⓘ |
| heritageDesignation |
Virginia Landmarks Register
ⓘ
listed on the National Register of Historic Places ⓘ |
| locatedIn |
Arlington County, Virginia
ⓘ
linked to:
Arlington County
Arlington, Virginia ⓘ United States National Capital Region ⓘ
linked to:
National Capital Region
Virginia ⓘ |
| locatedInTime | American Civil War era ⓘ |
| locatedNear | Washington, D.C. ⓘ |
| locatedOn | heights overlooking the Potomac River approaches to Washington, D.C. ⓘ |
| militaryBranch | United States Army ⓘ |
| namedAfter | Ethan Allen ⓘ |
| namedFor | Revolutionary War patriot Ethan Allen ⓘ |
| openToPublic | yes ⓘ |
| operator | Union Army ⓘ |
| partOf |
Defenses of Washington
ⓘ
ring of defenses around Washington, D.C. ⓘ |
| preservationStatus | partially preserved earthworks ⓘ |
| region | Northern Virginia ⓘ |
| significantEvent | defense of Washington, D.C., during the American Civil War ⓘ |
| strategicRole | defense of the Chain Bridge approaches to Washington, D.C. ⓘ |
| terrainFeature | hilltop position ⓘ |
| usedBy | Union Army ⓘ |
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 Ethan Allen (site) Description of subject: Fort Ethan Allen (site) is a former Union Army fortification in Arlington, Virginia, that was part of the ring of defenses built to protect Washington, D.C., during the American Civil War.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.