static S ai_html_renderWebShort(Web web) {
  try {
    int n = l(web_nodes(web));
    if (n == 0) ret "Empty web";
    WebNode a = web_firstNode(web);
    if (n == 1) ret join(" = ", map html_encyclopediaTopic(web_texts(a)));
    if (n == 2) {
      WebNode b = web_secondNode(web);
      WebRelation r= web_getRelationOpt(a, b);
      if (r != null) ret ai_html_renderTriple(r);
    }
    ret "Includes " + joinWithComma(map html_encyclopediaTopic(map web_text(web_nodes(web))));
  } catch print e {
    ret "Error";
  }
}