Daini Denden (DDI)
E160436
Daini Denden (DDI) was a Japanese telecommunications company established as a challenger to the former state monopoly, later becoming part of KDDI Corporation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Daini Denden Inc. | 3 |
| Daini Denden (DDI) canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1396464 — 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: Daini Denden (DDI) Context triple: [Kazuo Inamori, founded, Daini Denden (DDI)]
-
A.
Daza
The Daza are an ethnic group of the central Sahara, primarily in Chad, known for their nomadic pastoralist lifestyle and close cultural and linguistic ties to the Toubou (Tebu) peoples.
-
B.
Kyodai
Kyodai is the common abbreviated name for Kyoto University, one of Japan’s most prestigious national research universities.
-
C.
Nisshoki
Nisshoki, more commonly known as the Hinomaru, is the national flag of Japan featuring a red sun disc centered on a white field.
-
D.
Takanami
Takanami was a Japanese destroyer of the Imperial Japanese Navy during World War II, notable for being sunk in the Battle of Tassafaronga in 1942.
-
E.
Dawan
Dawan are an indigenous ethnic group of western Timor known for their distinct Austronesian language and traditional agrarian culture.
- 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: Daini Denden (DDI) Target entity description: Daini Denden (DDI) was a Japanese telecommunications company established as a challenger to the former state monopoly, later becoming part of KDDI Corporation.
-
A.
Daza
The Daza are an ethnic group of the central Sahara, primarily in Chad, known for their nomadic pastoralist lifestyle and close cultural and linguistic ties to the Toubou (Tebu) peoples.
-
B.
Kyodai
Kyodai is the common abbreviated name for Kyoto University, one of Japan’s most prestigious national research universities.
-
C.
Nisshoki
Nisshoki, more commonly known as the Hinomaru, is the national flag of Japan featuring a red sun disc centered on a white field.
-
D.
Takanami
Takanami was a Japanese destroyer of the Imperial Japanese Navy during World War II, notable for being sunk in the Battle of Tassafaronga in 1942.
-
E.
Dawan
Dawan are an indigenous ethnic group of western Timor known for their distinct Austronesian language and traditional agrarian culture.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese company
ⓘ
telecommunications company ⓘ |
| country | Japan ⓘ |
| formerMonopolyChallenged |
Nippon Telegraph and Telephone Public Corporation
ⓘ
linked to:
NTT DoCoMo
|
| foundationDate | 1984-06-01 ⓘ |
| foundationYear | 1984 ⓘ |
| foundedAs |
Daini Denden Inc.
ⓘ
linked to:
Daini Denden (DDI)
|
| foundedBy |
Kazuo Inamori
ⓘ
Kyocera Corporation ⓘ Matsushita Electric Industrial Co., Ltd. ⓘ
linked to:
Matsushita Electric Industrial Co.
other private Japanese investors ⓘ |
| headquartersLocation |
Kyoto, Japan
ⓘ
linked to:
Kyoto
|
| industry | telecommunications ⓘ |
| laterPartOf |
KDDI Corporation
ⓘ
linked to:
KDDI
|
| mergedInto |
KDDI Corporation
ⓘ
linked to:
KDDI
|
| mergerPartners |
IDO Corporation
ⓘ
KDD Corporation ⓘ |
| mergerYear | 2000 ⓘ |
| notableFounderRole |
Kazuo Inamori was also founder of Kyocera
ⓘ
linked to:
Kazuo Inamori
|
| parentCompanyAfterMerger |
KDDI Corporation
ⓘ
linked to:
KDDI
|
| purpose | to compete with the former state telecommunications monopoly in Japan ⓘ |
| reasonForDefunctStatus | merged into KDDI Corporation ⓘ |
| regulatoryContext | established following liberalization of Japan’s telecommunications market in the 1980s ⓘ |
| serviceArea | Japan ⓘ |
| serviceType |
data communications services
ⓘ
long-distance telephone services ⓘ mobile telecommunications services ⓘ |
| shortName | DDI ⓘ |
| status | defunct ⓘ |
| successor |
KDDI Corporation
ⓘ
linked to:
KDDI
|
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: Daini Denden (DDI) Description of subject: Daini Denden (DDI) was a Japanese telecommunications company established as a challenger to the former state monopoly, later becoming part of KDDI Corporation.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Daini Denden (DDI)
linked to: Daini Denden (DDI)