/Constant.java/1.1/Sun May 22 18:27:17 2005//
/DatalogQuery.java/1.1/Wed May 25 09:03:51 2005//
/InterpretedPredicate.java/1.1/Sun May 22 18:29:25 2005//
/NumericalConstant.java/1.1/Sun May 22 18:25:16 2005//
/Predicate.java/1.1/Mon Jun  6 20:34:36 2005//
/PredicateElement.java/1.1/Sun May 22 18:30:28 2005//
/StringConstant.java/1.1/Sun May 22 18:29:15 2005//
/Variable.java/1.1/Sun May 22 18:29:25 2005//
