static S ai_postTriple(T3<S> triple) {
  // check, clean
  
  if (triple_anyPartNull(triple)) null;
  triple = trimTriple(triple);
  if (!ai_tripleAllowedToPost(triple)) fail("No");
  
  // existing?

  if (ai_cache_hasTriple(triple)) null;
  
  // post handler?
  
  AI_PostHandler handler = ai_postHandler();
  if (handler != null)
    ret handler.postTriple(triple);
  else {
    // post web the normal way
    Web web = webFromTriple(triple);
    postSoftwareMadeWeb(web);
    ret web.globalID;
  }
}

static S ai_postTriple(S a, S b, S c) {
  ret ai_postTriple(t3(a, b, c));
}