Seimon Tetsubashi
E374477
Seimon Tetsubashi is a historic stone bridge at the main gate of Tokyo’s Imperial Palace, forming part of the iconic Nijūbashi bridge ensemble.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Seimon Tetsubashi canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3627611 — 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: Seimon Tetsubashi Context triple: [Nijūbashi Bridge, hasPart, Seimon Tetsubashi]
-
A.
Kaga lacquerware
Kaga lacquerware is a traditional Japanese craft from the former Kaga Province, renowned for its richly decorated lacquer objects featuring intricate designs and refined techniques.
-
B.
Imari
Imari is a Japanese city in Saga Prefecture renowned for its historic porcelain and pottery production, especially Imari ware.
-
C.
Oshiage
Oshiage is a district in Sumida, Tokyo, best known as the location of the Tokyo Skytree and its surrounding commercial complex.
-
D.
Yasakani-no-Magatama
Yasakani-no-Magatama is the sacred curved jewel that serves as one of Japan’s three Imperial Regalia, symbolizing benevolence and imperial authority.
-
E.
Shinmei
Shinmei is a divine title associated with Emperor Jimmu, the legendary first emperor of Japan revered as a descendant of the sun goddess Amaterasu.
- 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: Seimon Tetsubashi Target entity description: Seimon Tetsubashi is a historic stone bridge at the main gate of Tokyo’s Imperial Palace, forming part of the iconic Nijūbashi bridge ensemble.
-
A.
Kaga lacquerware
Kaga lacquerware is a traditional Japanese craft from the former Kaga Province, renowned for its richly decorated lacquer objects featuring intricate designs and refined techniques.
-
B.
Imari
Imari is a Japanese city in Saga Prefecture renowned for its historic porcelain and pottery production, especially Imari ware.
-
C.
Oshiage
Oshiage is a district in Sumida, Tokyo, best known as the location of the Tokyo Skytree and its surrounding commercial complex.
-
D.
Yasakani-no-Magatama
Yasakani-no-Magatama is the sacred curved jewel that serves as one of Japan’s three Imperial Regalia, symbolizing benevolence and imperial authority.
-
E.
Shinmei
Shinmei is a divine title associated with Emperor Jimmu, the legendary first emperor of Japan revered as a descendant of the sun goddess Amaterasu.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
historic structure
ⓘ
stone bridge ⓘ |
| accessRestriction | restricted public access (depending on area and occasions) ⓘ |
| associatedWith |
Tokyo Imperial Palace main gate
ⓘ
linked to:
Otemon Gate
|
| country | Japan ⓘ |
| crosses |
Imperial Palace moat
ⓘ
linked to:
Sakurada-bori moat
|
| function | access to main gate of Tokyo Imperial Palace ⓘ |
| hasCoordinateSystem | WGS84 (approximate, not specified here) ⓘ |
| hasHeritageStatus | historic landmark (de facto, widely recognized) ⓘ |
| hasNameInLanguage | 正門鉄橋 ⓘ |
| hasParapet | stone balustrade ⓘ |
| hasRole |
outer bridge of Nijūbashi
ⓘ
linked to:
Nijūbashi Bridge
|
| hasStructureType | arch bridge ⓘ |
| hasViewOf |
Fushimi-yagura (Imperial Palace watchtower)
ⓘ
linked to:
Fushimi-yagura (turret)
|
| isOftenMisidentifiedAs | Nijūbashi ⓘ |
| isPhotographedAs | part of iconic view of Nijūbashi ⓘ |
| languageOfName | Japanese ⓘ |
| locatedIn |
Chiyoda, Tokyo
ⓘ
Japan ⓘ Tokyo ⓘ |
| locatedNear |
Marunouchi district
ⓘ
Tokyo Station ⓘ |
| material | stone ⓘ |
| nameMeaning | Main Gate Iron Bridge ⓘ |
| ownedBy | Imperial Household Agency ⓘ |
| partOf |
Nijūbashi bridge ensemble
ⓘ
linked to:
Nijūbashi Bridge
Tokyo Imperial Palace ⓘ |
| touristAttraction | yes ⓘ |
| usedFor |
ceremonial access
ⓘ
pedestrian access ⓘ |
| visibleFrom |
Kokyo Gaien (Outer Gardens of the Imperial Palace)
ⓘ
linked to:
Kokyo Gaien National Garden
|
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: Seimon Tetsubashi Description of subject: Seimon Tetsubashi is a historic stone bridge at the main gate of Tokyo’s Imperial Palace, forming part of the iconic Nijūbashi bridge ensemble.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.