Property:Has query
From HackerspaceWiki
"Has query" is a predefined property that represents meta information (in form of a subobject) about individual queries 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.
This is the page of special property Has query. It lists all pages using this special property. See the help page Special property Has query for further information.