Mud Island Fort
E589909
Mud Island Fort is a historic American Revolutionary War fortification on the Delaware River in Philadelphia, Pennsylvania, known for its crucial role in delaying British naval forces in 1777.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mud Island Fort canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6405260 — 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: Mud Island Fort Context triple: [Fort Mifflin, alsoKnownAs, Mud Island Fort]
-
A.
Saybrook Fort
Saybrook Fort was a 17th-century English colonial fortification in present-day Old Saybrook, Connecticut, built to protect settlers and control access to the Connecticut River.
-
B.
Mancera Island Fort
Mancera Island Fort is a historic Spanish colonial coastal fortress located on Mancera Island near Valdivia in southern Chile, built to defend the strategic bay and river system from foreign incursions.
-
C.
Fort Santiago
Fort Santiago is a historic Spanish-era citadel in Manila, Philippines, renowned as a key military defense structure and as the prison where national hero José Rizal was held before his execution.
-
D.
Gates Fort
Gates Fort is a small historic coastal fortification in St. George’s, Bermuda, built to guard the entrance to St. George’s Harbour.
-
E.
White Point Battery
White Point Battery is a historic coastal artillery fortification and landmark located at the southern tip of the Charleston peninsula in South Carolina.
- 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: Mud Island Fort Target entity description: Mud Island Fort is a historic American Revolutionary War fortification on the Delaware River in Philadelphia, Pennsylvania, known for its crucial role in delaying British naval forces in 1777.
-
A.
Saybrook Fort
Saybrook Fort was a 17th-century English colonial fortification in present-day Old Saybrook, Connecticut, built to protect settlers and control access to the Connecticut River.
-
B.
Mancera Island Fort
Mancera Island Fort is a historic Spanish colonial coastal fortress located on Mancera Island near Valdivia in southern Chile, built to defend the strategic bay and river system from foreign incursions.
-
C.
Fort Santiago
Fort Santiago is a historic Spanish-era citadel in Manila, Philippines, renowned as a key military defense structure and as the prison where national hero José Rizal was held before his execution.
-
D.
Gates Fort
Gates Fort is a small historic coastal fortification in St. George’s, Bermuda, built to guard the entrance to St. George’s Harbour.
-
E.
White Point Battery
White Point Battery is a historic coastal artillery fortification and landmark located at the southern tip of the Charleston peninsula in South Carolina.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
American Revolutionary War site
ⓘ
historic fort ⓘ museum ⓘ tourist attraction ⓘ |
| alsoKnownAs | Fort Mifflin NERFINISHED ⓘ |
| architecturalStyle | star fort ⓘ |
| builder | Continental Congress NERFINISHED ⓘ |
| builtFor | coastal defense ⓘ |
| conflict | American Revolutionary War ⓘ |
| constructionEnd | 1776 ⓘ |
| constructionStart | 1771 ⓘ |
| controlledBy |
British Army
NERFINISHED
ⓘ
Continental Army NERFINISHED ⓘ United States Army NERFINISHED ⓘ |
| coordinates | 39.871°N 75.211°W ⓘ |
| country | United States of America ⓘ |
| functionDuringCivilWar | Union prison ⓘ |
| garrison |
Continental Army troops
NERFINISHED
ⓘ
Pennsylvania troops ⓘ |
| hasFacility |
interpretive exhibits
ⓘ
visitor center ⓘ |
| hasFeature |
bastions
ⓘ
casemates ⓘ earthen ramparts ⓘ powder magazine ⓘ water battery ⓘ |
| heritageDesignation |
National Historic Landmark
ⓘ
National Register of Historic Places ⓘ
surface form:
National Register of Historic Places listing
|
| locatedIn |
Pennsylvania
ⓘ
Philadelphia ⓘ |
| locatedOn |
Delaware River
NERFINISHED
ⓘ
Mud Island NERFINISHED ⓘ |
| material | masonry ⓘ |
| notableEvent | Siege of Fort Mifflin NERFINISHED ⓘ |
| notableYear | 1777 ⓘ |
| NRHPListingYear | 1970 ⓘ |
| offers |
battle reenactments
ⓘ
guided tours ⓘ living history programs ⓘ |
| openToPublic | yes ⓘ |
| owner | City of Philadelphia NERFINISHED ⓘ |
| partOf | Philadelphia County NERFINISHED ⓘ |
| roleIn1777 | delayed British naval forces on the Delaware River ⓘ |
| significance |
helped Washington’s army escape after the fall of Philadelphia
ⓘ
one of the most heroic stands of the American Revolution ⓘ |
| strategicPurpose | defend approach to Philadelphia via Delaware River ⓘ |
| usedDuring |
American Civil War
NERFINISHED
ⓘ
War of 1812 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: Mud Island Fort Description of subject: Mud Island Fort is a historic American Revolutionary War fortification on the Delaware River in Philadelphia, Pennsylvania, known for its crucial role in delaying British naval forces in 1777.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.