"Has query" is a predefined property that represents meta information (in form of a subobject) about individual queries and is provided by Semantic MediaWiki.

"Display title of" is a predefined property that can assign a distinct display title to an entity and is provided by Semantic MediaWiki.

"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by Semantic MediaWiki.