Property:Query size
From semantic-mediawiki.org
"Query size" is a predefined property that collects the number of conditions used in a query 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 Query size. It lists all pages using this special property. See the help page Special property "Query size" for further information.