*/
private void expandTrue(GdlSentence base, int index, LinkedList<GdlTerm> workingSet, List<GdlRule> results)
{
if ( base.arity() == index )
{
GdlConstant name = (GdlConstant) base.get(0);
List<GdlTerm> body = new ArrayList<GdlTerm>(workingSet);
GdlFunction function = GdlPool.getFunction(name, body);
results.add(GdlPool.getRule(GdlPool.getRelation(GdlPool.getConstant("true"), new GdlTerm[] { function })));
}