Property:Query depth
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Add [[has type::<Type>]] in the wiki text for this property to specify Property Range
"Query depth" is a predefined property that informs about the depth (numerical value computed on the basis of subquery nesting and resolved property chains) of a query while query execution is being restricted by the $smwgQMaxDepth setting. 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.