Fort Trumbull (Third System reconstruction)
E283043
Fort Trumbull (Third System reconstruction) is a 19th-century masonry coastal fortification in New London, Connecticut, rebuilt under the U.S. Army’s Third System program to strengthen seacoast defenses.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Fort Trumbull (Revolutionary War-era fort) | 1 |
| Fort Trumbull (Second System fort) | 1 |
| Fort Trumbull (Third System reconstruction) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2618010 — 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 Trumbull (Third System reconstruction) Context triple: [Third System of US seacoast defense, hasPart, Fort Trumbull (Third System reconstruction)]
-
A.
Fort Wadsworth
Fort Wadsworth is a historic former military installation and coastal defense fortification located at the Narrows in New York Harbor, now part of the Gateway National Recreation Area.
-
B.
Fort Hamilton
Fort Hamilton is a 19th-century British coastal artillery fort in Hamilton, Bermuda, built to defend the harbor and now preserved as a historic site and tourist attraction.
-
C.
Fort Hamilton
Fort Hamilton is a historic U.S. Army installation in Brooklyn, New York, guarding the entrance to New York Harbor at the Verrazzano-Narrows Bridge.
-
D.
Fort Totten
Fort Totten is a residential neighborhood in Northeast Washington, D.C., known for its proximity to the large Fort Totten Metro station and the historic Civil War-era fort site.
-
E.
Fort Jay
Fort Jay is a historic coastal fortification on Governors Island in New York Harbor, notable for its star-shaped design and long military service from the early 19th century through the Cold War.
- 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 Trumbull (Third System reconstruction) Target entity description: Fort Trumbull (Third System reconstruction) is a 19th-century masonry coastal fortification in New London, Connecticut, rebuilt under the U.S. Army’s Third System program to strengthen seacoast defenses.
-
A.
Fort Wadsworth
Fort Wadsworth is a historic former military installation and coastal defense fortification located at the Narrows in New York Harbor, now part of the Gateway National Recreation Area.
-
B.
Fort Hamilton
Fort Hamilton is a 19th-century British coastal artillery fort in Hamilton, Bermuda, built to defend the harbor and now preserved as a historic site and tourist attraction.
-
C.
Fort Hamilton
Fort Hamilton is a historic U.S. Army installation in Brooklyn, New York, guarding the entrance to New York Harbor at the Verrazzano-Narrows Bridge.
-
D.
Fort Totten
Fort Totten is a residential neighborhood in Northeast Washington, D.C., known for its proximity to the large Fort Totten Metro station and the historic Civil War-era fort site.
-
E.
Fort Jay
Fort Jay is a historic coastal fortification on Governors Island in New York Harbor, notable for its star-shaped design and long military service from the early 19th century through the Cold War.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
19th-century fortification
ⓘ
Third System coastal fortification ⓘ masonry fort ⓘ |
| builtFor |
defense of New London Harbor
ⓘ
protection of the Thames River approaches ⓘ |
| constructionMaterial |
brick
ⓘ
stone masonry ⓘ |
| controlledBy | United States Army ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
historic site
ⓘ
museum ⓘ |
| designedUnder | U.S. Board of Engineers for Fortifications ⓘ |
| era | Antebellum period ⓘ |
| garrisonedBy | Union Army ⓘ |
| hasArchitecturalStyle | Third System bastioned fort design ⓘ |
| hasFeature |
bastions
ⓘ
casemates ⓘ moat (dry ditch) ⓘ parade ground ⓘ ravelin ⓘ sally port ⓘ seacoast gun emplacements ⓘ water battery ⓘ |
| hasFunction |
coastal artillery post
ⓘ
training post ⓘ |
| hasGunEmplacementsFor |
rifled artillery
ⓘ
smoothbore cannon ⓘ |
| hasNearbyCity |
New London, Connecticut
ⓘ
surface form:
New London
|
| hasShape | five-sided fort ⓘ |
| heritageDesignation | listed on the National Register of Historic Places ⓘ |
| locatedIn | New London, Connecticut ⓘ |
| locatedOnWaterbody | Thames River ⓘ |
| openToPublic | yes ⓘ |
| operator |
U.S. Army Corps of Engineers
ⓘ
surface form:
United States Army Corps of Engineers
|
| partOf |
Fort Trumbull State Park
ⓘ
surface form:
Fort Trumbull State Park (as preserved structure)
Third System of US seacoast defense ⓘ
surface form:
Third System of U.S. seacoast fortifications
United States seacoast defense systems ⓘ
surface form:
United States seacoast defense system
|
| reconstructionOf |
Fort Trumbull (Third System reconstruction)
self-linksurface differs
ⓘ
surface form:
Fort Trumbull (Revolutionary War-era fort)
Fort Trumbull (Third System reconstruction) self-linksurface differs ⓘ
surface form:
Fort Trumbull (Second System fort)
|
| region | New England ⓘ |
| state | Connecticut ⓘ |
| strategicRole |
guarding approaches to Long Island Sound
ⓘ
protecting maritime commerce in New London Harbor ⓘ |
| usedDuringConflict | American Civil War ⓘ |
| usedFor |
artillery emplacement
ⓘ
coastal defense ⓘ harbor defense ⓘ |
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 Trumbull (Third System reconstruction) Description of subject: Fort Trumbull (Third System reconstruction) is a 19th-century masonry coastal fortification in New London, Connecticut, rebuilt under the U.S. Army’s Third System program to strengthen seacoast defenses.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
Fort Trumbull (Third System reconstruction)
→
reconstructionOf
→
Fort Trumbull (Third System reconstruction)
self-linksurface differs
ⓘ
this entity surface form:
Fort Trumbull (Revolutionary War-era fort)
Fort Trumbull (Third System reconstruction)
→
reconstructionOf
→
Fort Trumbull (Third System reconstruction)
self-linksurface differs
ⓘ
this entity surface form:
Fort Trumbull (Second System fort)