Contents
What is a property in Wikidata?
A property describes the data value of a statement and can be thought of as a category of data, for example “color” for the data value “blue”. Properties, when paired with values, form a statement in Wikidata. Properties are also used in qualifiers.
How do you write a Wikidata query?
In the query.wikidata.org query editor, you can press Ctrl + Space (or Alt + Enter or Ctrl + Alt + Enter ) at any point in the query and get suggestions for code that might be appropriate; select the right suggestion with the up / down arrow keys, and press Enter to select it.
How many properties in Wikidata?
9,053 properties
On this page, you will find several lists of the currently 9,053 properties in Wikidata. Each statement at an item page links to a property, and assigns it a value.
What are statements in Wikidata?
In Wikidata, a concept, topic, or object is represented by an item. Each item is accorded its own page. A statement (Resource Description Framework (Q54872) graph format: Subject-Predicate-Object) is how the information we know about an item – the data we have about it – gets recorded in Wikidata.
What are the examples of physical properties of matter?
A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
How do I access wikidata?
You can query the data in Wikidata through our SPARQL endpoint, the Wikidata Query Service. The service can be used both as an interactive web interface, or programmatically by submitting GET or POST requests to https://query.wikidata.org/sparql .
What is query service?
The query service is one of the Microsoft Dynamics AX system services that enables you to issue a query for data without using an Application Integration Framework (AIF) document service or creating a custom service.
Is concentration a physical or chemical property?
While a chemical property is revealed only by the behavior of a substance in a chemical reaction, a physical property can be observed and measured without changing the composition of a sample. Physical properties include color, pressure, length, and concentration.
How do I find my Wikidata ID?
Finding a Wikidata ID
- Wikidata Search. Search on the Wikidata homepage: www.wikidata.org. Now you can copy the id from that page.
- Wikipedia search. Find a wikipedia article. If the article has a corresponding Wikidata item, you can click the “Wikidata item” button on the side menu. (
- Editor integration. iD.