text: SELECT tab0.v0 AS v0 , tab3.v4 AS v4 , tab2.v3 AS v3 , tab1.v2 AS v2 
   FROM    (SELECT sub AS v0 
  	 FROM rdf__type$$1$$ 
  	 WHERE obj = 'wsdbm:ProductCategory13'
  	) tab0
   JOIN    (SELECT sub AS v0 , obj AS v4 
  	 FROM sorg__publisher$$4$$
  	
  	) tab3
   ON(tab0.v0=tab3.v0)
   JOIN    (SELECT sub AS v0 , obj AS v2 
  	 FROM sorg__caption$$2$$
  	
  	) tab1
   ON(tab3.v0=tab1.v0)
   JOIN    (SELECT sub AS v0 , obj AS v3 
  	 FROM wsdbm__hasGenre$$3$$
  	
  	) tab2
   ON(tab1.v0=tab2.v0)
  
  
  ++++++Tables Statistic
  sorg__caption$$2$$	0	VP	sorg__caption/
  	VP	<sorg__caption>	2501
  ------
  wsdbm__hasGenre$$3$$	0	VP	wsdbm__hasGenre/
  	VP	<wsdbm__hasGenre>	58787
  ------
  sorg__publisher$$4$$	0	VP	sorg__publisher/
  	VP	<sorg__publisher>	1350
  ------
  rdf__type$$1$$	0	VP	rdf__type/
  	VP	<rdf__type>	136215
  ------
  