// ---- Build expression
bp.add(new Triple(var_x, NodeFactory.createURI(BASE+"p"), var_z)) ;
Op op = new OpBGP(bp) ;
//Expr expr = ExprUtils.parse("?z < 2 ") ;
Expr expr = new E_LessThan(new ExprVar(var_z), NodeValue.makeNodeInteger(2)) ;
op = OpFilter.filter(expr, op) ;
// ---- Example setup
Model m = makeModel() ;
m.write(System.out, "TTL") ;