v.add(propertySensor1);
v.add(propertySensor2);
Expression eps1 = new Contains(v,true);
assertTrue(((Boolean) (e1.evaluate())).booleanValue());
assertTrue(((Boolean) (eps1.evaluate())).booleanValue());
} catch (SPLException e) {
fail("Received evaluation exception " + e.getMessage());
} catch (Exception e) {
fail("Received expression exception " + e.getMessage());
}