static S ai_simplifyNP(S s) {
  try answer dropAfterSubString_orNull(s, " in order to ");
  try answer dropAfterSubString_orNull(s, " you ");
    
  s = ai_dropLeadingAdverbs(s);
  
  L<S> tok = nlTok(s);
  
  /*if (eqicGet(tok, 1, "the")
    && isNoun(get(tok, 3))
    && eqicGet(tok, 5, "of"))
    ret joinTakeFirst(tok, 4);*/
    
  int i = indexOfPred(tok, f isPreposition);
  if (i >= 0) ret joinTakeFirst(tok, i-1);
  
  ret s;
}