// p = pair("<category>", "word")
sbool parsing_checkMatchPairUsingMechList(Pair<S> p) {
  if (!isAngleBracketed(p.a)) false;
  Set<S> lists = ai_mechListNamesForAngleBracketCategory(p.a);
  //print(+listName);
  for (S listName : lists) {
    Set<S> entries = mechSetCI(listName);
    //print("Found " + n2(entries, "entry", "entries") + " for " + listName);
    if (contains(entries, p.b)) true;
  }
  false;
}