static Exp nlLogic_applyMatches(Exp e, SS m) {
  if (e == null) null;
  if (e cast And)
    ret And(nlLogic_applyMatches(e.a, m), nlLogic_applyMatches(e.b, m));
  if (e cast ExpNot)
    ret ExpNot(nlLogic_applyMatches(e.a, m));
  if (e cast Func)
    ret Func(e.name, nlLogic_applyMatches(e.arg, m));
    
  if (e cast Sentence)
    ret Sentence(javaTok(ai_standardReplaceVars(e.text(), m)));
  if (e cast Sentence2)
    ret Sentence2(ai_standardReplaceVars(e.text(), m));
    
  ret e;
}