Property talk:P4839

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Wolfram Language entity code
input form for an entity in Wolfram Language

Represents	Wolfram Alpha (Q207006)
Applicable "stated in" value	Wolfram Language (Q15241057)
Data type	External identifier
Allowed values	Entity\["[A-Z][a-zA-Z]+", \{?"[^"]+"(?:, (?:\d+|"[a-zA-Z]+"))*\}?\]Entity\[.+\]
Usage notes	To retrieve the entity code, type the item into Wolfram Alpha, mouse over the input interpretation, then click on Plain Text (bottom right corner) and select the value under "Wolfram Language code:" (if available).
Example	Earth (Q2) → ["Planet",%20"Earth" Entity["Planet", "Earth"]] Riemann hypothesis (Q205966) → ["FamousMathProblem",%20"RiemannHypothesis" Entity["FamousMathProblem", "RiemannHypothesis"]] Basshunter (Q383541) → ["Person",%20"Basshunter::v4vqn" Entity["Person", "Basshunter::v4vqn"]] PostScrip (Q218170) → ["FileFormat",%20"PS-1" Entity["FileFormat", "PS-1"]] Washington County (Q507256) → ["AdministrativeDivision",%20{"WashingtonCounty",%20"Maine",%20"UnitedStates"} Entity["AdministrativeDivision", {"WashingtonCounty", "Maine", "UnitedStates"}]] Clifton Bridge (Q5133183) → ["Bridge",%20"CliftonBridge(Nottingham)::j23y6" Entity["Bridge", "CliftonBridge(Nottingham)::j23y6"]] Do Androids Dream of Electric Sheep? (Q605249) → ["Book",%20"DoAndroidsDreamOfElectricSheep?1968" Entity["Book", "DoAndroidsDreamOfElectricSheep?1968"]] bit shift (Q10265617) → ["Word",%20"bit%20shift" Entity["Word", "bit shift"]] Hawaii Five-0 (Q728443) → ["TelevisionProgram",%20"HawaiiFive02010" Entity["TelevisionProgram", "HawaiiFive02010"]] Wolfram Language (Q15241057) → ["ProgrammingLanguage",%20"WolframLanguage" Entity["ProgrammingLanguage", "WolframLanguage"]] Stephen Wolfram (Q310798) → ["Person",%20"StephenWolfram::j276d" Entity["Person", "StephenWolfram::j276d"]]
Formatter URL	https://www.wolframalpha.com/input/?i=$1
Tracking: usage	Category:Pages using Wikidata property P4839 (Q63179353)
See also	MathWorld ID (P2812), Wolfram Language unit code (P7007), Wolfram Language quantity ID (P7431), Wolfram Language entity type (P7497)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Mix'n'match (Report) Database reports/Complex constraint violations/P4839 Database reports/Constraint violations/P4839 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 293,601 Main statement 293,566 out of 16,881,532 (2% complete) >99.9% of uses Qualifier 11 <0.1% of uses Reference 24 <0.1% of uses
Search for values

[create Create a translatable help page (preferably in English) for this property to be included here]

Format “Entity\["[A-Z][a-zA-Z]+", \{?"[^"]+"(?:, (?:\d+|"[a-zA-Z]+"))*\}?\]”: value must be formatted using this pattern (PCRE syntax). (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/P4839#Format, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P4839#Scope, hourly updated report, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (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/P4839#Unique value, SPARQL (every item), SPARQL (by value)

Format “Entity\[.+\]”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P4839#Format, hourly updated report, 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/P4839#Entity types

Single best value: this property generally contains a single value. If there are several, one would have preferred rank (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/P4839#single best value, SPARQL

Constraint regex too tight

Just a note - the regular expression doesn't allow for colons within the strings, which is valid in WL. For instance Entity["Species", "Species:HomoSapiens"] is the entity code for Q5, but this shows constraint violation. --Hebejebelus (talk) 13:36, 26 January 2019 (UTC)

Data type

Why isn't this an external identifier? --99of9 (talk) 01:21, 1 May 2019 (UTC)

• @99of9: I think we should change it. Somehow the creation discussion and its review miss it/didn't fix it. --- Jura 11:38, 11 August 2019 (UTC)