Diplay how to get an inventory of the knowledgebase

Statement: 

Diplay how to get an inventory of the knowledgebase A limit of results per page $number$ (e.g. 10)

Query: 
prefix void: <http://rdfs.org/ns/void#> select ?graph ?class ?entities where { ?graph void:classPartition [ void:class ?class; void:entities ?entities ] . } order by ?graph ?class limit ??number