I-400-class submarine
E750890
The I-400-class submarine was a World War II-era Japanese "submarine aircraft carrier," among the largest submarines of its time, designed to launch surprise air attacks from the sea.
All labels observed (3)
| Label | Occurrences |
|---|---|
| I-400-class submarine canonical | 2 |
| Japanese submarine I-400 | 2 |
| I-400 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8698215 — 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: I-400-class submarine Context triple: [Imperial Japanese Navy submarine force, usedWeapon, I-400-class submarine]
-
A.
Sōryū-class submarine
The Sōryū-class submarine is a Japanese diesel-electric attack submarine class known for its advanced stealth, air-independent propulsion, and long-range operational capabilities.
-
B.
Oyashio-class submarine
The Oyashio-class submarine is a modern Japanese diesel-electric attack submarine class known for its advanced sonar, quiet operation, and service with the Japan Maritime Self-Defense Force.
-
C.
Taigei-class submarine
The Taigei-class submarine is a modern Japanese diesel-electric attack submarine class featuring advanced stealth, sonar, and lithium-ion battery technology for the Japan Maritime Self-Defense Force.
-
D.
Sendai-class cruiser
The Sendai-class cruiser was a group of light cruisers built for the Imperial Japanese Navy in the early 20th century, designed primarily as destroyer flotilla leaders and for night combat operations.
-
E.
Typhoon-class submarine
The Typhoon-class submarine is a Soviet-designed nuclear-powered ballistic missile submarine, famous as the largest submarine ever built and a key component of the USSR’s Cold War nuclear deterrent.
- 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: I-400-class submarine Target entity description: The I-400-class submarine was a World War II-era Japanese "submarine aircraft carrier," among the largest submarines of its time, designed to launch surprise air attacks from the sea.
-
A.
Sōryū-class submarine
The Sōryū-class submarine is a Japanese diesel-electric attack submarine class known for its advanced stealth, air-independent propulsion, and long-range operational capabilities.
-
B.
Oyashio-class submarine
The Oyashio-class submarine is a modern Japanese diesel-electric attack submarine class known for its advanced sonar, quiet operation, and service with the Japan Maritime Self-Defense Force.
-
C.
Taigei-class submarine
The Taigei-class submarine is a modern Japanese diesel-electric attack submarine class featuring advanced stealth, sonar, and lithium-ion battery technology for the Japan Maritime Self-Defense Force.
-
D.
Sendai-class cruiser
The Sendai-class cruiser was a group of light cruisers built for the Imperial Japanese Navy in the early 20th century, designed primarily as destroyer flotilla leaders and for night combat operations.
-
E.
Typhoon-class submarine
The Typhoon-class submarine is a Soviet-designed nuclear-powered ballistic missile submarine, famous as the largest submarine ever built and a key component of the USSR’s Cold War nuclear deterrent.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Imperial Japanese Navy submarine class
ⓘ
submarine aircraft carrier ⓘ submarine class ⓘ |
| armament |
anti-aircraft guns
ⓘ
deck guns ⓘ torpedo tubes ⓘ |
| category |
Japanese submarines of World War II
ⓘ
submarine aircraft carriers ⓘ submarines of the Imperial Japanese Navy ⓘ |
| conflict | World War II ⓘ |
| constructionMaterial | steel hull ⓘ |
| countryOfOrigin |
Empire of Japan
ⓘ
linked to:
Imperial Japan
|
| designedBy | Imperial Japanese Navy Technical Department ⓘ |
| designedDuring | 1940s ⓘ |
| designedFor |
launching surprise air attacks from the sea
ⓘ
strategic long-range strike missions ⓘ |
| designedToCarry |
Aichi M6A Seiran floatplane
ⓘ
linked to:
Aichi M6A
|
| era |
World War II era
ⓘ
linked to:
World War II
|
| hasCapability |
long-range surface cruising
ⓘ
submerged operations ⓘ |
| hasFeature |
aircraft catapult
ⓘ
diesel-electric propulsion ⓘ large cruising range ⓘ onboard aircraft hangar ⓘ |
| hasSubclass |
Japanese submarine I-400
ⓘ
linked to:
I-400-class submarine
Japanese submarine I-401 ⓘ Japanese submarine I-402 ⓘ |
| historicalSignificance |
largest displacement submarines built during World War II
ⓘ
pioneering underwater aircraft carrier concept ⓘ |
| influencedBy | aircraft carrier concept ⓘ |
| intendedTarget |
Panama Canal
ⓘ
United States mainland ⓘ
linked to:
contiguous United States
|
| navalArchitectureType | ocean-going submarine ⓘ |
| navalDoctrine | offensive carrier-style submarine operations ⓘ |
| notableFor |
ability to launch multiple aircraft
ⓘ
being among the largest submarines of its time ⓘ |
| operatedBy | Imperial Japanese Navy ⓘ |
| propulsion |
diesel engines
ⓘ
electric motors ⓘ |
| serviceEntryPeriod | 1944 ⓘ |
| status | retired ⓘ |
| strategicRole |
covert strike platform
ⓘ
special attack operations ⓘ |
| theaterOfOperations | Pacific Ocean ⓘ |
| usedBy | Axis powers ⓘ |
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: I-400-class submarine Description of subject: The I-400-class submarine was a World War II-era Japanese "submarine aircraft carrier," among the largest submarines of its time, designed to launch surprise air attacks from the sea.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: I-400-class submarine
linked to: I-400-class submarine
linked to: I-400-class submarine