Property talk:P8556

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[create Create a translatable help page (preferably in English) for this property to be included here]
  Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P8556#type Q23038290, Q45762, Q98961713, SPARQL, SPARQL (new)
 
Citation needed: the property must have at least one reference (Help)
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P8556#citation needed, SPARQL (new)
 
Scope is as main value (Q54828448), as qualifier (Q54828449): the property must be used by specified way only (Help)
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P8556#scope, SPARQL, SPARQL (new)
 
Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P8556#allowed entity types, SPARQL (new)
 
Qualifiers “sourcing circumstances (P1480), applies to part (P518), refine date (P4241): this property should be used only with the listed qualifiers. (Help)
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P8556#Allowed qualifiers, SPARQL, SPARQL (new)
  Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P8556#Item P141, SPARQL, SPARQL (new)

Visualization of timelineEdit

#defaultView:Timeline
SELECT ?item ?itemLabel ?value ?img
{
	?item wdt:P8556 ?value .
	OPTIONAL {?item wdt:P18 ?img.}
	SERVICE wikibase:label { bd:serviceParam wikibase:language "ru,en"  }    
}

Try it!

Work to be doneEdit

There are lists of extinct animals on Wikipedia [1]. It would be useful to import that data into WikiData! The-erinaceous-one (talk) 09:51, 24 August 2020 (UTC)

Lists of Extinct Species
List Status
List of extinct mammels Finished.
List of extinct birds
List of extinct languages
ru:Животные, вымершие после 1500 года In progress. Completed up to 1600.

Difficult Items to ClassifyEdit

Occasionally we'll come accross an item that is tricky to add extinction date (P8556) to, so let's collect them here so we can sort them out.

Item Reason for difficulty Solution
Hispaniolan edible rat (Q301328) Extinction date is given as a range My solution was to use earliest date (P1319) and latest date (P1326) as qualifiers and set the value of extinction date (P8556) to the center of the time span.
Puerto Rican hutia (Q1767062) Extinction date is only given as "early 1900s" I set the date to the decade of 1900s and used "sourcing circumstances" and "circa" as a qualifier. An alternative is to set the century and use "sourcing circumstances" "beginning of".
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