United States Fourth Fleet
E198510
The United States Fourth Fleet is a U.S. Navy operational fleet responsible for naval operations, security cooperation, and maritime partnerships in the Caribbean, and Central and South American waters.
All labels observed (5)
How this entity was disambiguated
This entity first appeared as the object of triple T1589873 — 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: United States Fourth Fleet Context triple: [Carrier Strike Group, usedBy, United States Fourth Fleet]
-
A.
Fourth Fleet
The Fourth Fleet was a major operational formation of the Imperial Japanese Navy, tasked with conducting naval operations across specific Pacific regions during the early stages of World War II.
-
B.
United States Sixth Fleet
The United States Sixth Fleet is a major U.S. Navy operational fleet responsible for naval operations, security, and power projection primarily in the European and African regions, including the Mediterranean Sea.
-
C.
United States Third Fleet
The United States Third Fleet is a major operational fleet of the U.S. Navy responsible for naval forces in the eastern and northern Pacific Ocean.
-
D.
Sixth Fleet
The Sixth Fleet was a major operational formation of the Imperial Japanese Navy during World War II, primarily responsible for commanding and coordinating submarine forces.
-
E.
U.S. Fifth Fleet
The U.S. Fifth Fleet is a numbered fleet of the United States Navy responsible for naval forces and operations primarily in the Middle East region, including the Persian Gulf, Red Sea, Arabian Sea, and parts of the Indian Ocean.
- 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: United States Fourth Fleet Target entity description: The United States Fourth Fleet is a U.S. Navy operational fleet responsible for naval operations, security cooperation, and maritime partnerships in the Caribbean, and Central and South American waters.
-
A.
Fourth Fleet
The Fourth Fleet was a major operational formation of the Imperial Japanese Navy, tasked with conducting naval operations across specific Pacific regions during the early stages of World War II.
-
B.
United States Sixth Fleet
The United States Sixth Fleet is a major U.S. Navy operational fleet responsible for naval operations, security, and power projection primarily in the European and African regions, including the Mediterranean Sea.
-
C.
United States Third Fleet
The United States Third Fleet is a major operational fleet of the U.S. Navy responsible for naval forces in the eastern and northern Pacific Ocean.
-
D.
Sixth Fleet
The Sixth Fleet was a major operational formation of the Imperial Japanese Navy during World War II, primarily responsible for commanding and coordinating submarine forces.
-
E.
U.S. Fifth Fleet
The U.S. Fifth Fleet is a numbered fleet of the United States Navy responsible for naval forces and operations primarily in the Middle East region, including the Persian Gulf, Red Sea, Arabian Sea, and parts of the Indian Ocean.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf | Numbered fleet of the United States Navy ⓘ |
| abbreviation |
C4F
ⓘ
USNAVSO/C4F ⓘ |
| allegiance |
United States
ⓘ
linked to:
United States of America
|
| areaOfResponsibility |
Atlantic and Pacific waters adjacent to Central and South America
ⓘ
Caribbean Sea ⓘ Central America ⓘ South America ⓘ |
| commanderTitle | Commander, U.S. Naval Forces Southern Command/Commander, U.S. Fourth Fleet ⓘ |
| conflict | World War II ⓘ |
| country | United States of America ⓘ |
| dateFormed | 1943-03-15 ⓘ |
| disbanded | 1950 ⓘ |
| engagesIn |
counter-narcotics operations
ⓘ
maritime domain awareness operations ⓘ multinational naval exercises in Latin America ⓘ search and rescue support ⓘ |
| garrison | Naval Station Mayport ⓘ |
| headquartersLocation |
Jacksonville, Florida area
ⓘ
linked to:
Jacksonville metropolitan area
Mayport, Florida ⓘ Naval Station Mayport, Florida ⓘ
linked to:
Naval Station Mayport
|
| historicalHeadquartersLocation |
Recife, Brazil
ⓘ
linked to:
Recife
|
| language | English ⓘ |
| motto | not widely publicized or not officially designated ⓘ |
| operationalControlOf |
U.S. Navy aircraft deployed to U.S. Southern Command area of responsibility
ⓘ
U.S. Navy ships deployed to U.S. Southern Command area of responsibility ⓘ U.S. Navy submarines deployed to U.S. Southern Command area of responsibility ⓘ |
| partOf |
U.S. Naval Forces Southern Command
ⓘ
United States Fleet Forces Command ⓘ
linked to:
U.S. Fleet Forces Command
|
| primaryMissionDuringWorldWarII |
anti-submarine warfare in the South Atlantic
ⓘ
protect Allied shipping in the South Atlantic ⓘ |
| reestablished | 2008-07-12 ⓘ |
| role |
humanitarian assistance and disaster relief support
ⓘ
maritime partnerships ⓘ maritime security cooperation ⓘ naval operations in Central American waters ⓘ naval operations in South American waters ⓘ naval operations in the Caribbean Sea ⓘ support to joint and combined military operations ⓘ theater security cooperation ⓘ |
| serviceBranch | United States Navy ⓘ |
| status | active ⓘ |
| subordinateTo |
U.S. Naval Forces Southern Command
ⓘ
United States Fleet Forces Command ⓘ
linked to:
U.S. Fleet Forces Command
|
| supportsCommand |
United States Southern Command
ⓘ
linked to:
U.S. Southern Command
|
| theater |
Caribbean Sea
ⓘ
South Atlantic Ocean ⓘ
linked to:
South Atlantic
Western Hemisphere ⓘ |
| theaterCommand |
United States Southern Command
ⓘ
linked to:
U.S. Southern Command
|
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: United States Fourth Fleet Description of subject: The United States Fourth Fleet is a U.S. Navy operational fleet responsible for naval operations, security cooperation, and maritime partnerships in the Caribbean, and Central and South American waters.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Carrier Strike Groups
Coco Solo Naval Air Station
→
controlledBy
→
United States Navy Caribbean Sea Frontier (historical)
ⓘ
subject linked to:
Coco Solo Naval Air Station, Panama Canal Zone
linked to: United States Fourth Fleet
Commander, U.S. Naval Forces Southern Command/Commander, U.S. Fourth Fleet
→
hasComponent
→
U.S. Fourth Fleet
ⓘ
linked to: United States Fourth Fleet
Commander, U.S. Naval Forces Southern Command/Commander, U.S. Fourth Fleet
→
historicalNote
→
U.S. Fourth Fleet was originally established during World War II and later disestablished
ⓘ
linked to: United States Fourth Fleet
Commander, U.S. Naval Forces Southern Command/Commander, U.S. Fourth Fleet
→
historicalNote
→
U.S. Fourth Fleet was reestablished in 2008 as the naval component for U.S. Southern Command
ⓘ
linked to: United States Fourth Fleet