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