Okawa
E784979
Okawa is the former name of Tokyo’s Sumida River, historically known as a major waterway central to the city’s commerce and culture.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Okawa canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9223505 — 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: Okawa Context triple: [Sumida River, historicalName, Okawa]
-
A.
Okawa
Okawa is a city in southwestern Japan known for its traditional woodworking and furniture-making industries within Fukuoka Prefecture.
-
B.
Ozaki
Ozaki is a Japanese surname borne by various notable figures in politics, literature, and the arts.
-
C.
Mutaguchi
Mutaguchi Renya was a Japanese general in the Imperial Japanese Army best known for commanding the disastrous Imphal offensive during World War II.
-
D.
Kamikawa
Kamikawa is a town in Hokkaido, Japan, known as a gateway to the mountainous landscapes and hot springs of Daisetsuzan National Park.
-
E.
Aikawa
Aikawa was a former town in Niigata Prefecture, Japan, known historically for its role in the Sado gold and silver mining region before being merged into the city of Sado.
- 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: Okawa Target entity description: Okawa is the former name of Tokyo’s Sumida River, historically known as a major waterway central to the city’s commerce and culture.
-
A.
Okawa
Okawa is a city in southwestern Japan known for its traditional woodworking and furniture-making industries within Fukuoka Prefecture.
-
B.
Ozaki
Ozaki is a Japanese surname borne by various notable figures in politics, literature, and the arts.
-
C.
Mutaguchi
Mutaguchi Renya was a Japanese general in the Imperial Japanese Army best known for commanding the disastrous Imphal offensive during World War II.
-
D.
Kamikawa
Kamikawa is a town in Hokkaido, Japan, known as a gateway to the mountainous landscapes and hot springs of Daisetsuzan National Park.
-
E.
Aikawa
Aikawa was a former town in Niigata Prefecture, Japan, known historically for its role in the Sado gold and silver mining region before being merged into the city of Sado.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
former name of a river
ⓘ
historical river name ⓘ |
| associatedWith | Edo period ⓘ |
| city | Tokyo ⓘ |
| country | Japan ⓘ |
| culturalAssociation | ukiyo-e depictions of rivers in Edo ⓘ |
| economicImportance | supported river-borne commerce in Edo/Tokyo ⓘ |
| flowsThrough |
Edo (historical Tokyo)
ⓘ
linked to:
Edo
|
| formerNameOf | Sumida River ⓘ |
| heritageStatus | historically important urban river ⓘ |
| historicalRole |
commercial transport route
ⓘ
cultural center ⓘ |
| language | Japanese ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| modernName | Sumida River ⓘ |
| nameMeaning | "big river" in Japanese ⓘ |
| partOf |
Tokyo waterway network
ⓘ
linked to:
Tokyo river system
|
| relatedTo |
Edo River
ⓘ
Tokyo Bay ⓘ |
| roleInUrbanDevelopment | facilitated growth of Edo/Tokyo ⓘ |
| significance |
central to commerce
ⓘ
central to culture ⓘ major waterway ⓘ |
| usedFor |
fishing
ⓘ
recreation ⓘ shipping ⓘ trade ⓘ transportation ⓘ |
| waterwayType | river ⓘ |
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: Okawa Description of subject: Okawa is the former name of Tokyo’s Sumida River, historically known as a major waterway central to the city’s commerce and culture.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.