Property:Has type
From Placeography
"Has type" is a predefined property that describes the datatype of a property and is provided by Semantic MediaWiki. This property is pre-deployed (also known as special property) and comes with additional administrative privileges but can be used just like any other user-defined property.
has type is a special property in Semantic MediaWik] with a built-in meaning: it assigns a type to a property. Special:Types lists the types available in the wiki.
For example, the page for Property:Population would specify [[has type::Number]]. "Has type" assumes its value is in the Type namespace, so you can omit Type:.
