Yokosuka Port
E389481
Yokosuka Port is a major Japanese maritime hub in Kanagawa Prefecture known for its commercial shipping facilities and significant naval bases, including those of the Japan Maritime Self-Defense Force and the U.S. Navy.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Port of Yokosuka | 3 |
| Yokosuka naval port | 2 |
| Yokosuka Port canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3793168 — 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: Yokosuka Port Context triple: [Yokosuka, Kanagawa, Japan, hasPort, Yokosuka Port]
-
A.
Hiroshima Port
Hiroshima Port is a major Japanese seaport in Hiroshima City that serves as a key hub for passenger ferries and cargo traffic within the Seto Inland Sea.
-
B.
Takamatsu Port
Takamatsu Port is a major maritime hub in Japan’s Seto Inland Sea, serving as a key gateway for passenger ferries and cargo traffic connecting Shikoku with surrounding islands and mainland regions.
-
C.
Port of Chiba
The Port of Chiba is one of Japan’s largest industrial and cargo ports, serving as a major hub for petrochemical and manufacturing industries along the eastern shore of Tokyo Bay.
-
D.
Miyazaki Port
Miyazaki Port is a coastal seaport in Miyazaki, Japan, serving as a regional hub for maritime transport, logistics, and passenger ferries.
-
E.
Port of Nagoya
The Port of Nagoya is Japan’s busiest and largest trading port, serving as a major hub for automobile exports and international maritime commerce.
- 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: Yokosuka Port Target entity description: Yokosuka Port is a major Japanese maritime hub in Kanagawa Prefecture known for its commercial shipping facilities and significant naval bases, including those of the Japan Maritime Self-Defense Force and the U.S. Navy.
-
A.
Hiroshima Port
Hiroshima Port is a major Japanese seaport in Hiroshima City that serves as a key hub for passenger ferries and cargo traffic within the Seto Inland Sea.
-
B.
Takamatsu Port
Takamatsu Port is a major maritime hub in Japan’s Seto Inland Sea, serving as a key gateway for passenger ferries and cargo traffic connecting Shikoku with surrounding islands and mainland regions.
-
C.
Port of Chiba
The Port of Chiba is one of Japan’s largest industrial and cargo ports, serving as a major hub for petrochemical and manufacturing industries along the eastern shore of Tokyo Bay.
-
D.
Miyazaki Port
Miyazaki Port is a coastal seaport in Miyazaki, Japan, serving as a regional hub for maritime transport, logistics, and passenger ferries.
-
E.
Port of Nagoya
The Port of Nagoya is Japan’s busiest and largest trading port, serving as a major hub for automobile exports and international maritime commerce.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
harbor
ⓘ
seaport ⓘ |
| adjacentTo |
Tokyo Bay shipping lanes
ⓘ
Yokosuka city center ⓘ |
| connectedTo |
domestic coastal shipping routes
ⓘ
international maritime routes in the Pacific Ocean ⓘ |
| country | Japan ⓘ |
| governedBy |
Kanagawa Prefectural Government
ⓘ
local authorities of Yokosuka ⓘ |
| hasActivity |
commercial shipping
ⓘ
military logistics ⓘ naval operations support ⓘ ship maintenance ⓘ |
| hasFacility |
Japan Maritime Self-Defense Force base
ⓘ
United States Navy base ⓘ cargo terminals ⓘ container handling facilities ⓘ fuel storage facilities ⓘ logistics warehouses ⓘ naval dockyard area ⓘ piers ⓘ ship repair facilities ⓘ wharfs ⓘ |
| hasFunction |
commercial shipping hub
ⓘ
naval base area ⓘ |
| hasNearbyBase |
Japan Maritime Self-Defense Force Yokosuka base
ⓘ
U.S. Fleet Activities Yokosuka ⓘ
linked to:
Fleet Activities Yokosuka
|
| hasRole | dual-use port for military and commercial purposes ⓘ |
| locatedIn |
Kanagawa Prefecture
ⓘ
Kantō region ⓘ Tokyo Bay ⓘ Yokosuka ⓘ |
| near |
Miura Peninsula
ⓘ
Tokyo ⓘ |
| partOf |
Greater Tokyo Area
ⓘ
linked to:
Tokyo metropolitan area
Japanese port network ⓘ |
| strategicImportance |
important base for Japan Maritime Self-Defense Force operations
ⓘ
key base for U.S. naval presence in the western Pacific ⓘ major maritime hub in eastern Japan ⓘ |
| supports |
maritime transportation in the Tokyo Bay area
ⓘ
regional trade in Kanagawa Prefecture ⓘ |
| usedBy |
Japan Maritime Self-Defense Force
ⓘ
United States Navy ⓘ |
| usedFor |
deployment of naval vessels
ⓘ
import and export of goods ⓘ logistical support for naval fleets ⓘ |
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: Yokosuka Port Description of subject: Yokosuka Port is a major Japanese maritime hub in Kanagawa Prefecture known for its commercial shipping facilities and significant naval bases, including those of the Japan Maritime Self-Defense Force and the U.S. Navy.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Yokosuka Port
linked to: Yokosuka Port
linked to: Yokosuka Port
linked to: Yokosuka Port