Extinct Language Year Famous Cases Lookup
Independently verified language/dialect/source last-speaker or documentation event, not universal year of linguistic extinction. Exact independently verified context/edition key, not live or embedded reference data. Caller establishes language, dialect, method and reference context; no automatic identity or universal language-wide claim.
Description
An extinction-year claim depends on what counts as the last speaker or last continuing use.
An extinction-year claim depends on what counts as the last speaker or last continuing use.1
Historical records and definitions should remain attached to the case. The tool retrieves your supplied source-specific notice for one exact key; it contains no built-in or live reference database.
When to use Extinct Language Year Famous Cases Lookup
Use this tool to calculate or review the supplied observations under the stated rules. Specify the language variety, analysis, source edition and population or inventory definition.
How to use Extinct Language Year Famous Cases Lookup and understand its results
- Specify the language variety, analysis, source edition and population or inventory definition.
- Enter callerVerifiedExtinctionCaseKeys, callerVerifiedExtinctionCaseNotices, queryExtinctionCaseKey, using the field meanings and rules below, then run the tool.
- Read matchedCallerNotice, using the output meanings and calculation rules below. Confirm that the exact matched record is the one whose source and context apply.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerVerifiedExtinctionCaseKeys | Caller verified extinction case keys | list of string | Required |
| callerVerifiedExtinctionCaseNotices | Caller verified extinction case notices | list of string | Required |
| queryExtinctionCaseKey | Query extinction case key; use the exact reference token or coordinate domain stated below | string | Required |
Supply nonempty aligned unique nonblank context keys and nonblank notices, then query one exact existing key. Matching is case-sensitive without trimming or normalization. Return its original notice unchanged; unknown keys fail. No data is fetched or independently verified.
notice=notices[indexOf(keys,exactQuery)] Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| matchedCallerNotice | Matched caller notice | string |
{
"input": {
"callerVerifiedExtinctionCaseKeys": [
"context-a/edition-a",
"context-a/edition-b"
],
"callerVerifiedExtinctionCaseNotices": [
"independent reference a",
"independent reference b"
],
"queryExtinctionCaseKey": "context-a/edition-b"
},
"output": {
"matchedCallerNotice": "independent reference b"
}
}Limitations and assumptions
The language variety, analytical definitions and reference scope are supplied by the caller. No corpus, speech or complete/current linguistic registry is analyzed automatically. Reference records and their claimed verification are supplied by the caller; the tool does not retrieve or verify them.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above.
Alternative or Complementary methods
For a related step, use UNESCO Endangerment Scale Lookup: Intergenerational transmission categories describe whether younger generations acquire and use a language. For a complementary comparison, use Historic Lingua Franca Period Lookup: A historical lingua franca serves communication across language communities in a defined setting.
References
Similar or alternative tools
- UNESCO Endangerment Scale Lookup
Intergenerational transmission categories describe whether younger generations acquire and use a language.
- Historic Lingua Franca Period Lookup
A historical lingua franca serves communication across language communities in a defined setting.