長良川
E738298
長良川 is a major river in central Japan renowned for its clear waters, traditional cormorant fishing, and scenic valleys flowing through Gifu Prefecture.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T8354657 — 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: 長良川 Context triple: [中部地方, hasRiver, 長良川]
-
A.
木曽川
木曽川 is a major river in central Japan that flows through the Kiso Valley and is known for its scenic beauty and historical importance as part of the Nōbi Plain river system.
-
B.
Sagami River
The Sagami River is a major river in central Japan that flows through Yamanashi and Kanagawa Prefectures before reaching the Pacific Ocean.
-
C.
Shinano River
The Shinano River is Japan’s longest river, flowing through central Honshu before emptying into the Sea of Japan.
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D.
Mukogawa River
The Mukogawa River is a prominent river in Japan’s Hyōgo Prefecture that flows through cities such as Nishinomiya before emptying into Osaka Bay.
-
E.
Yamatogawa
Yamatogawa is the romanized name of the Yamato River, a significant waterway in the Kansai region of Japan.
- 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: 長良川 Target entity description: 長良川 is a major river in central Japan renowned for its clear waters, traditional cormorant fishing, and scenic valleys flowing through Gifu Prefecture.
-
A.
木曽川
木曽川 is a major river in central Japan that flows through the Kiso Valley and is known for its scenic beauty and historical importance as part of the Nōbi Plain river system.
-
B.
Sagami River
The Sagami River is a major river in central Japan that flows through Yamanashi and Kanagawa Prefectures before reaching the Pacific Ocean.
-
C.
Shinano River
The Shinano River is Japan’s longest river, flowing through central Honshu before emptying into the Sea of Japan.
-
D.
Mukogawa River
The Mukogawa River is a prominent river in Japan’s Hyōgo Prefecture that flows through cities such as Nishinomiya before emptying into Osaka Bay.
-
E.
Yamatogawa
Yamatogawa is the romanized name of the Yamato River, a significant waterway in the Kansai region of Japan.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
river ⓘ |
| basinSize | about 1,985 square kilometers ⓘ |
| confluenceWith |
Kiso River (via estuary system)
ⓘ
linked to:
Kiso River
|
| cormorantFishingLocation |
Gifu City
ⓘ
linked to:
Gifu city
Seki City ⓘ |
| cormorantFishingSeason | May to October ⓘ |
| country | Japan ⓘ |
| culturalHeritageStatus | Important Intangible Folk Cultural Property (cormorant fishing on the Nagara River) ⓘ |
| flowsThrough |
Gifu City
ⓘ
linked to:
Gifu city
Gifu Prefecture NERFINISHED ⓘ Gujo City ⓘ Kaizu City ⓘ Kakamigahara City ⓘ Mino City ⓘ Seki City ⓘ |
| hasBridge |
Nagara Bridge (Gifu City)
ⓘ
linked to:
Nagoya Railroad Nagara Bridge
Nagoya Railroad Nagara Bridge ⓘ |
| hasDam | Nagara Estuary Barrage ⓘ |
| hasTraditionalActivity | ukai (cormorant fishing) ⓘ |
| knownFor |
ayu (sweetfish) fishing
ⓘ
clear water ⓘ rafting ⓘ recreational fishing ⓘ scenic valleys ⓘ tourism ⓘ traditional cormorant fishing ⓘ |
| languageOfName | Japanese ⓘ |
| length | about 166 km ⓘ |
| locatedIn |
Chubu region
ⓘ
linked to:
Chūbu region
Gifu Prefecture NERFINISHED ⓘ |
| locatedOnContinent | Asia ⓘ |
| majorFishSpecies |
ayu (sweetfish)
ⓘ
ayu used in traditional fishing ⓘ |
| mouthLocation |
Mie Prefecture
ⓘ
Nagashima area ⓘ |
| mouthOfWatercourse | Ise Bay ⓘ |
| nameInJapanese | 長良川 ⓘ |
| nameInRomaji | Nagara-gawa ⓘ |
| partOf |
Kiso Three Rivers
ⓘ
linked to:
Kiso River
|
| passesNear | Gifu Castle ⓘ |
| riverSystem |
Kiso Three Rivers
ⓘ
linked to:
Kiso River
|
| sourceLocation |
Gujo City
ⓘ
Mt. Dainichigatake ⓘ |
| touristAttractionType |
river scenery
ⓘ
traditional cultural experience ⓘ |
| usedFor |
hydroelectric power generation
ⓘ
inland navigation (historically) ⓘ irrigation ⓘ water supply ⓘ |
| valleyName | Nagara River Valley ⓘ |
| waterQualityReputation | one of the clearest rivers in Japan ⓘ |
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: 長良川 Description of subject: 長良川 is a major river in central Japan renowned for its clear waters, traditional cormorant fishing, and scenic valleys flowing through Gifu Prefecture.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 長良川