Nagaoka City
E879623
Nagaoka City is a major city in Niigata Prefecture, Japan, known for its historic castle town origins and one of the country’s most famous summer fireworks festivals.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nagaoka City canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7065457 — 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: Nagaoka City Context triple: [Nagaoka City Council, meetsIn, Nagaoka City]
-
A.
Nagaokakyo City
Nagaokakyo City is a suburban city in Kyoto Prefecture, Japan, known for its residential communities, historical temples, and convenient rail access to Kyoto and Osaka.
-
B.
Saijō City
Saijō City is a municipality in Ehime Prefecture on Japan’s Shikoku Island, known as a gateway to Mount Ishizuchi and for its natural springs and scenic mountain landscapes.
-
C.
Kurihara City
Kurihara City is a municipality in northern Japan known for its rural landscapes, agriculture, and historical sites within Miyagi Prefecture.
-
D.
Tagajō City
Tagajō City is a coastal municipality in northeastern Japan known for its historic Taga Castle ruins and role as an ancient regional administrative center.
-
E.
Shiojiri City
Shiojiri City is a regional city in central Japan known for its location in Nagano Prefecture’s mountainous inland area and its role as a transportation and agricultural hub.
- 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: Nagaoka City Target entity description: Nagaoka City is a major city in Niigata Prefecture, Japan, known for its historic castle town origins and one of the country’s most famous summer fireworks festivals.
-
A.
Nagaokakyo City
Nagaokakyo City is a suburban city in Kyoto Prefecture, Japan, known for its residential communities, historical temples, and convenient rail access to Kyoto and Osaka.
-
B.
Saijō City
Saijō City is a municipality in Ehime Prefecture on Japan’s Shikoku Island, known as a gateway to Mount Ishizuchi and for its natural springs and scenic mountain landscapes.
-
C.
Kurihara City
Kurihara City is a municipality in northern Japan known for its rural landscapes, agriculture, and historical sites within Miyagi Prefecture.
-
D.
Tagajō City
Tagajō City is a coastal municipality in northeastern Japan known for its historic Taga Castle ruins and role as an ancient regional administrative center.
-
E.
Shiojiri City
Shiojiri City is a regional city in central Japan known for its location in Nagano Prefecture’s mountainous inland area and its role as a transportation and agricultural hub.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
city
ⓘ
municipality ⓘ |
| airRaidDate | 1945-08-01 ⓘ |
| climateClassification | Köppen Dfa ⓘ |
| country | Japan ⓘ |
| dateOfCityStatus | 1906-04-01 ⓘ |
| fireworksFestivalDuration | three days ⓘ |
| fireworksFestivalHeldInMonth | August ⓘ |
| fireworksFestivalScale | one of Japan’s largest fireworks festivals ⓘ |
| formerDomain | Nagaoka Domain NERFINISHED ⓘ |
| formerProvince | Echigo Province NERFINISHED ⓘ |
| governmentType | mayor–council ⓘ |
| hasClimate | humid continental climate ⓘ |
| hasEvent |
Nagaoka Festival
NERFINISHED
ⓘ
Nagaoka Fireworks Festival NERFINISHED ⓘ |
| hasExpressway |
Hokuriku Expressway
NERFINISHED
ⓘ
Kan-Etsu Expressway NERFINISHED ⓘ |
| hasJapaneseName | 長岡市 NERFINISHED ⓘ |
| hasMayor | Tatsunobu Isoda NERFINISHED ⓘ |
| hasPeaceCommemoration | fireworks of white chrysanthemums ⓘ |
| hasRailwayStation | Nagaoka Station NERFINISHED ⓘ |
| hasSisterCity |
Fort Worth
NERFINISHED
ⓘ
Honolulu NERFINISHED ⓘ Tainan NERFINISHED ⓘ |
| hasSpecialtyFood |
Nagaoka ginger shōyu ramen
ⓘ
hegi soba ⓘ |
| hasSpecialtyProduct |
rice
ⓘ
sake ⓘ |
| hasUniversity |
Nagaoka Institute of Design
NERFINISHED
ⓘ
Nagaoka University of Technology NERFINISHED ⓘ |
| historicalOrigin | castle town of Nagaoka Domain ⓘ |
| isCoreCity | true ⓘ |
| isCoreCityOf | Niigata Prefecture NERFINISHED ⓘ |
| isSecondLargestCityIn | Niigata Prefecture NERFINISHED ⓘ |
| knownFor |
Nagaoka Festival fireworks
ⓘ
historic castle town origins ⓘ summer fireworks festival ⓘ |
| locatedIn |
Chūbu region
NERFINISHED
ⓘ
Niigata Prefecture NERFINISHED ⓘ |
| locatedOn |
Honshu
ⓘ
Sea of Japan coast NERFINISHED ⓘ |
| locatedOnRiver | Shinano River NERFINISHED ⓘ |
| nearestPrefecturalCapital | Niigata City NERFINISHED ⓘ |
| prefecturalCapitalOf | none ⓘ |
| servedByRailwayLine |
Jōetsu Line
NERFINISHED
ⓘ
Jōetsu Shinkansen NERFINISHED ⓘ Shinetsu Main Line NERFINISHED ⓘ |
| sufferedEvent | Nagaoka air raid NERFINISHED ⓘ |
| timeZone | Japan Standard Time ⓘ |
| utcOffset | +09:00 ⓘ |
| wasBombedIn | World War II NERFINISHED ⓘ |
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: Nagaoka City Description of subject: Nagaoka City is a major city in Niigata Prefecture, Japan, known for its historic castle town origins and one of the country’s most famous summer fireworks festivals.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.