SELECT p.x
	FROM sparqltable (select ?x 
		WHERE{
			?prog rdf:type 'Progetto'.
			?y rdf:type 'Logico'.
			?prog :numIdent ?x.
			?y :relativo ?prog.
	
	})p 		

	WHERE p.x not in(SELECT r.x
	FROM sparqltable (select ?x 
		WHERE{
			?prog rdf:type 'Progetto'.
			?y rdf:type 'Logico'.
			?commPr rdf:type 'Committente'.
			?commDbms rdf:type 'Committente'.
			?dbms rdf:type 'DBMS'.
			?commDbms rdf:type 'Committente'.
			?dbms rdf:type 'DBMS'.
			?prog :numIdent ?x.
			?y :relativo ?prog.
			?y :implementaz ?dbms.	
			?dbms :licenza?commDbms.
			?commDbms :commessa ?prog.
	})r )