static L<S> ai_tripleIDs(Symbol a, Symbol b, Symbol c) {
  ret tripleWebsToGlobalIDStrings(ai_triples(a, b, c));
}

static L<S> ai_tripleIDs(Symbol a, Symbol b, Symbol c, AbstractThoughtSpace ts) {
  ret tripleWebsToGlobalIDStrings(ai_triples(a, b, c, ts));
}