@Test
public void testClassAttribute5()
throws TokenMgrError, ParseException, MalformedQueryException,
VisitorException {

  final String q = "SELECT * {\n ?s ?p [ ?p1 <Person>, < ] }";
  ast = SyntaxTreeBuilder.parseQuery(q);
  POFMetadata meta = PofNodesMetadata.retrieve(ast);
  assertTrue(meta.pofClassAttribute == null);
}