Property talk:P87

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librettist
author of the libretto (words) of an opera, operetta, oratorio or cantata, or of the book of a musical
Descriptionauthor of the libretto (words) of this opera
Representslibrettist (Q8178443)
Data typeItem
Domain
According to this template: work (Q386724)
According to statements in the property:
work (Q386724) or performing arts production (Q43099500)
When possible, data should only be stored as statements
Allowed valuespersons (note: this should be moved to the property statements)
ExampleThe Marriage of Figaro (Q201873)Lorenzo Da Ponte (Q268166)
Otello (Q172324)Arrigo Boito (Q219491)
Salome (Q723407)Richard Strauss (Q13894)
Tracking: sameno label (Q57387064)
Tracking: differencesno label (Q57387042)
Tracking: usageCategory:Pages using Wikidata property P87 (Q23909064)
See alsolyricist (P676), composer (P86)
Lists
Proposal discussionProposal discussion
Current uses
Total8,689
Main statement8,684>99.9% of uses
Qualifier5<0.1% of uses
Search for values
[create Create a translatable help page (preferably in English) for this property to be included here]
Value type “human (Q5), fictional human (Q15632617), group of humans (Q16334295): This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value human (Q5), fictional human (Q15632617), group of humans (Q16334295) (or a subclass thereof). (Help)
List of violations of this constraint: Database reports/Constraint violations/P87#Value type Q5, Q15632617, Q16334295, hourly updated report, SPARQL
Property “occupation (P106): librettist (Q8178443), writer (Q36180), novelist (Q6625963), opera composer (Q21680731), playwright (Q214917)” declared by target items of “librettist (P87): If [item A] has this property with value [item B], [item B] is required to have property “occupation (P106): librettist (Q8178443), writer (Q36180), novelist (Q6625963), opera composer (Q21680731), playwright (Q214917)”. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P87#Target required claim P106, SPARQL
Scope is as main value (Q54828448): the property must be used by specified way only (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P87#Scope, SPARQL
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. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P87#Entity types
Conflicts with “instance of (P31): libretto (Q131084): this property must not be used with the listed properties and values. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P87#Conflicts with P31, search, SPARQL
This property is being used by:

Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

opera

[edit]

The property description here clearly says that this is to be used for operas, but 17 items currently use it for national anthem (Q23691). Should they not use P87, and instead use lyricist (P676), and shouldn't the type constraint for this be narrowed to opera or subclasses of opera? --Haplology (talk) 07:08, 24 November 2014 (UTC)[reply]