Hachiōji Castle Ruins
E550625
Hachiōji Castle Ruins are the remains of a late Sengoku-period mountain fortress in Tokyo, Japan, now a historic site and popular hiking destination known for its stone walls and scenic views.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hachiōji Castle Ruins canonical | 1 |
| Hachiōji Castle site | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5852008 — 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: Hachiōji Castle Ruins Context triple: [Hachiōji, hasLandmark, Hachiōji Castle Ruins]
-
A.
Fushimi Castle
Fushimi Castle is a historic Japanese castle in Kyoto associated with Toyotomi Hideyoshi and known for its role in the late Sengoku period and early Edo period.
-
B.
Takeda Castle Ruins
Takeda Castle Ruins is a historic Japanese mountaintop fortress site famed for its dramatic “castle in the sky” appearance above the surrounding clouds.
-
C.
Hiroshima Castle
Hiroshima Castle is a reconstructed historic Japanese castle in Hiroshima, originally built in the 16th century and known for its traditional architecture and role as a feudal stronghold.
-
D.
Sendai Castle ruins
The Sendai Castle ruins are the remains of a historic hilltop fortress built by feudal lord Date Masamune, now a popular scenic and cultural site overlooking the city of Sendai in Japan.
-
E.
Nijō Castle
Nijō Castle is a historic shogunal residence and UNESCO World Heritage Site in Kyoto, Japan, renowned for its ornate palaces, beautiful gardens, and “nightingale” floors that chirp when walked upon.
- 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: Hachiōji Castle Ruins Target entity description: Hachiōji Castle Ruins are the remains of a late Sengoku-period mountain fortress in Tokyo, Japan, now a historic site and popular hiking destination known for its stone walls and scenic views.
-
A.
Fushimi Castle
Fushimi Castle is a historic Japanese castle in Kyoto associated with Toyotomi Hideyoshi and known for its role in the late Sengoku period and early Edo period.
-
B.
Takeda Castle Ruins
Takeda Castle Ruins is a historic Japanese mountaintop fortress site famed for its dramatic “castle in the sky” appearance above the surrounding clouds.
-
C.
Hiroshima Castle
Hiroshima Castle is a reconstructed historic Japanese castle in Hiroshima, originally built in the 16th century and known for its traditional architecture and role as a feudal stronghold.
-
D.
Sendai Castle ruins
The Sendai Castle ruins are the remains of a historic hilltop fortress built by feudal lord Date Masamune, now a popular scenic and cultural site overlooking the city of Sendai in Japan.
-
E.
Nijō Castle
Nijō Castle is a historic shogunal residence and UNESCO World Heritage Site in Kyoto, Japan, renowned for its ornate palaces, beautiful gardens, and “nightingale” floors that chirp when walked upon.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
castle ruins
ⓘ
historic site ⓘ mountain fortress ruins ⓘ |
| access | bus from JR Takao Station ⓘ |
| builder | Hōjō Ujiteru NERFINISHED ⓘ |
| builtFor | Hōjō clan NERFINISHED ⓘ |
| category |
Castles in Tokyo
ⓘ
Historic Sites of Japan NERFINISHED ⓘ Ruined castles in Japan ⓘ |
| constructionStart | late 16th century ⓘ |
| controlledBy | Late Hōjō clan NERFINISHED ⓘ |
| country | Japan ⓘ |
| demolished | 1590 ⓘ |
| elevation | approximately 445 meters ⓘ |
| event | Siege of Hachiōji Castle NERFINISHED ⓘ |
| hasPart |
earthwork terraces
ⓘ
gate remains ⓘ main bailey ⓘ moats ⓘ secondary baileys ⓘ stone walls ⓘ stone-paved approach ⓘ |
| hasView |
Hachiōji cityscape
ⓘ
surrounding mountains ⓘ |
| heritageDesignation | National Historic Site of Japan NERFINISHED ⓘ |
| knownFor |
hiking trails
ⓘ
mountain fortress layout ⓘ scenic views ⓘ stone walls ⓘ |
| languageOfName | Japanese ⓘ |
| locatedIn | Hachiōji, Tokyo NERFINISHED ⓘ |
| locatedInAdministrativeEntity | Tokyo Metropolis NERFINISHED ⓘ |
| locatedNear |
Mount Takao
NERFINISHED
ⓘ
Takao area ⓘ |
| locatedOn | Mount Fukasawa area NERFINISHED ⓘ |
| maintainedBy | Hachiōji City NERFINISHED ⓘ |
| material |
earthworks
ⓘ
stone ⓘ |
| nativeName | 八王子城跡 NERFINISHED ⓘ |
| openToPublic | yes ⓘ |
| partOf | Hachiōji Castle NERFINISHED ⓘ |
| period | Sengoku period ⓘ |
| presentUse |
hiking destination
ⓘ
historical education site ⓘ park ⓘ |
| terrain | mountainous ⓘ |
| touristType |
cultural tourism
ⓘ
nature tourism ⓘ |
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: Hachiōji Castle Ruins Description of subject: Hachiōji Castle Ruins are the remains of a late Sengoku-period mountain fortress in Tokyo, Japan, now a historic site and popular hiking destination known for its stone walls and scenic views.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Hachiōji Castle site