Fort Carroll
E693736
Fort Carroll is a 19th-century artificial island fortification in the Patapsco River near Baltimore, Maryland, built for coastal defense and now largely abandoned.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fort Carroll canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7781187 — 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 Carroll Context triple: [Fort Circle Parks, hasPart, Fort Carroll]
-
A.
Fort Story
Fort Story is a U.S. military installation in Virginia known for its coastal training facilities and role in amphibious and expeditionary operations.
-
B.
Fort McNair
Fort McNair is a historic U.S. Army post in Washington, D.C., that houses major military commands and educational institutions and has served as a key defense installation since the early 19th century.
-
C.
Fort Carroll (site)
Fort Carroll (site) is a historic Civil War–era defensive fortification that formed part of the ring of fort defenses protecting Washington, D.C.
-
D.
Fort Phil Kearny
Fort Phil Kearny was a 19th-century U.S. Army outpost in present-day Wyoming that became a focal point of conflict between the United States and Lakota Sioux during the Indian Wars.
-
E.
Fort Dupont
Fort Dupont is a residential neighborhood in Southeast Washington, D.C., known for its large park, historic Civil War-era earthworks, and community-oriented character.
- 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 Carroll Target entity description: Fort Carroll is a 19th-century artificial island fortification in the Patapsco River near Baltimore, Maryland, built for coastal defense and now largely abandoned.
-
A.
Fort Story
Fort Story is a U.S. military installation in Virginia known for its coastal training facilities and role in amphibious and expeditionary operations.
-
B.
Fort McNair
Fort McNair is a historic U.S. Army post in Washington, D.C., that houses major military commands and educational institutions and has served as a key defense installation since the early 19th century.
-
C.
Fort Carroll (site)
Fort Carroll (site) is a historic Civil War–era defensive fortification that formed part of the ring of fort defenses protecting Washington, D.C.
-
D.
Fort Phil Kearny
Fort Phil Kearny was a 19th-century U.S. Army outpost in present-day Wyoming that became a focal point of conflict between the United States and Lakota Sioux during the Indian Wars.
-
E.
Fort Dupont
Fort Dupont is a residential neighborhood in Southeast Washington, D.C., known for its large park, historic Civil War-era earthworks, and community-oriented character.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
artificial island
ⓘ
coastal fortification ⓘ sea fort ⓘ |
| access | only by boat ⓘ |
| administeredBy | United States Army Corps of Engineers NERFINISHED ⓘ |
| builtFor | coastal defense ⓘ |
| builtInCentury | 19th century ⓘ |
| constructionBegan | 1848 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
bird habitat
ⓘ
unused military installation ⓘ |
| designedBy |
Robert E. Lee
NERFINISHED
ⓘ
U.S. Army Corps of Engineers NERFINISHED ⓘ |
| elevation | approximately 0 meters above sea level ⓘ |
| garrisonedBy |
United States Army
NERFINISHED
ⓘ
United States Coast Artillery Corps NERFINISHED ⓘ |
| hasCondition |
deteriorated
ⓘ
overgrown with vegetation ⓘ |
| hasFeature |
casemates
ⓘ
lighthouse ⓘ masonry walls ⓘ parade ground ⓘ |
| hasHazard |
restricted access
ⓘ
structural instability ⓘ |
| hasMaterial |
brick
ⓘ
concrete (later modifications) ⓘ stone ⓘ |
| hasStructureType | Third System coastal fort NERFINISHED ⓘ |
| locatedIn | Patapsco River NERFINISHED ⓘ |
| locatedInMetropolitanArea | Baltimore metropolitan area NERFINISHED ⓘ |
| locatedNear | Baltimore, Maryland NERFINISHED ⓘ |
| namedAfter | Charles Carroll of Carrollton NERFINISHED ⓘ |
| nearbyCity | Baltimore NERFINISHED ⓘ |
| notableFor |
artificial island construction
ⓘ
obsolete coastal defense design ⓘ |
| ownership | United States federal government NERFINISHED ⓘ |
| partOf | Harbor defenses of Baltimore NERFINISHED ⓘ |
| region |
Mid-Atlantic states
ⓘ
surface form:
Mid-Atlantic United States
|
| shape | hexagonal ⓘ |
| state | Maryland ⓘ |
| status |
abandoned
ⓘ
uninhabited ⓘ |
| surroundedBy | water ⓘ |
| usedDuring |
American Civil War
NERFINISHED
ⓘ
World War I NERFINISHED ⓘ World War II ⓘ |
| waterBody |
Baltimore Harbor
NERFINISHED
ⓘ
Chesapeake Bay (via Patapsco River) NERFINISHED ⓘ |
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 Carroll Description of subject: Fort Carroll is a 19th-century artificial island fortification in the Patapsco River near Baltimore, Maryland, built for coastal defense and now largely abandoned.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.