INumberExpression numExpr5 = new ComposedNumberExpression(numExprList1, opList1);
numExprList2.add(numExpr3);
numExprList2.add(numExpr5);
INumberExpression numExpr6 = new ComposedNumberExpression(numExprList2, opList2);
s = v.verbalize(numExpr1);
assertEquals("4", s);
s = v.verbalize(numExpr2);
assertEquals("numVar", s);
s = v.verbalize(numExpr3);
assertEquals("4.9", s);