IETF BCP 47
E682197
IETF BCP 47 is the Internet standard that defines the structure and use of language tags for identifying human languages and related variants in digital systems.
All labels observed (7)
| Label | Occurrences |
|---|---|
| BCP 47 | 4 |
| RFC 5646 | 3 |
| IETF BCP 47 language tags | 2 |
| IETF language tags | 2 |
| BCP 47 Unicode locale extension subtags | 1 |
| BCP 47 language tags | 1 |
| IETF BCP 47 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7696474 — 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: IETF BCP 47 Context triple: [ISO 15924, relatedTo, IETF BCP 47]
-
A.
SSH Language Tags
SSH Language Tags are standardized identifiers used within the SSH protocol to specify human languages for messages and data, enabling proper localization and internationalization.
-
B.
ISO 15924
ISO 15924 is an international standard that assigns four-letter codes to the world’s writing systems and scripts for use in information processing and interchange.
-
C.
ISO 639
ISO 639 is an international standard that defines codes for the representation of names of languages.
-
D.
ISO 639-3 Registration Authority
The ISO 639-3 Registration Authority is the organization responsible for maintaining and updating the ISO 639-3 standard, which assigns three-letter codes to the world’s languages.
-
E.
Unicode Technical Standard #35
Unicode Technical Standard #35 is a Unicode Consortium specification that defines the Locale Data Markup Language (LDML) and related mechanisms for internationalization, including formatting of dates, times, numbers, and other locale-sensitive data.
- 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: IETF BCP 47 Target entity description: IETF BCP 47 is the Internet standard that defines the structure and use of language tags for identifying human languages and related variants in digital systems.
-
A.
SSH Language Tags
SSH Language Tags are standardized identifiers used within the SSH protocol to specify human languages for messages and data, enabling proper localization and internationalization.
-
B.
ISO 15924
ISO 15924 is an international standard that assigns four-letter codes to the world’s writing systems and scripts for use in information processing and interchange.
-
C.
ISO 639
ISO 639 is an international standard that defines codes for the representation of names of languages.
-
D.
ISO 639-3 Registration Authority
The ISO 639-3 Registration Authority is the organization responsible for maintaining and updating the ISO 639-3 standard, which assigns three-letter codes to the world’s languages.
-
E.
Unicode Technical Standard #35
Unicode Technical Standard #35 is a Unicode Consortium specification that defines the Locale Data Markup Language (LDML) and related mechanisms for internationalization, including formatting of dates, times, numbers, and other locale-sensitive data.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
IETF Best Current Practice document
ⓘ
Internet standard ⓘ language tagging standard ⓘ |
| category | internationalization standard ⓘ |
| defines |
language tags
ⓘ
semantics for language tags ⓘ syntax for language tags ⓘ use of language tags in Internet protocols ⓘ |
| exampleTag |
de-CH-1901
ⓘ
en-US ⓘ fr-CA ⓘ zh-Hant-TW ⓘ |
| fullName | Best Current Practice 47 ⓘ |
| governs |
identification of human languages
ⓘ
identification of language extensions ⓘ identification of language regions ⓘ identification of language scripts ⓘ identification of language variants ⓘ |
| includesConcept |
extension subtag
ⓘ
primary language subtag ⓘ private-use subtag ⓘ region subtag ⓘ script subtag ⓘ variant subtag ⓘ |
| maintainedBy |
IETF
ⓘ
linked to:
Internet Engineering Task Force
Internet Engineering Task Force ⓘ |
| partOfSeries | IETF BCP series ⓘ |
| primaryGoal | interoperable identification of languages in digital systems ⓘ |
| publishedBy | RFC Editor ⓘ |
| relatedTo |
ISO 15924 script codes
ⓘ
linked to:
ISO 15924
ISO 3166-1 country codes ⓘ
linked to:
ISO 3166-1
ISO 639 language codes ⓘ UN M.49 region codes ⓘ
linked to:
UN M49
|
| replaces | RFC 3066 ⓘ |
| scope | global use on the Internet ⓘ |
| standardizedIn |
RFC 4647
ⓘ
RFC 5646 ⓘ
linked to:
IETF BCP 47
|
| status | Best Current Practice ⓘ |
| supersedes | RFC 1766 ⓘ |
| supports |
language negotiation
ⓘ
matching of language tags ⓘ |
| usedIn |
HTML lang attribute
ⓘ
HTTP Accept-Language header ⓘ
linked to:
Accept-Language
XML xml:lang attribute ⓘ email and MIME headers ⓘ web and Internet protocols ⓘ |
| usesRegistry |
IANA Language Subtag Registry
ⓘ
linked to:
IANA language subtag registry
|
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: IETF BCP 47 Description of subject: IETF BCP 47 is the Internet standard that defines the structure and use of language tags for identifying human languages and related variants in digital systems.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47
linked to: IETF BCP 47