sclass AI_FactsBot > AttractorBot {
  Collection<S> facts = synchroCISet();
  
  public void run {
    say("I can store facts. Just type them. " + n2(facts, "fact") + " stored.");
  }
  
  // CONFIG
  
  class QuestionAttractor > Attractor {
    public bool matches(S s) {
      ret ai_isQuestion_2(s);
    }
    
    public void run {
      say("I cannot answer questions yet");
    }
  }
  
  class StoreFactAttractor > Attractor {
    S category;
    
    public bool matches(S s) {
      true;
    }
    
    public void run {
      if (facts.add(line))
        say("Fact stored");
      else
        say("I know");
    }
  }
  
  *() {
    standardAttractors(new QuestionAttractor, new StoreFactAttractor);
  }
}

Began life as a copy of #1022843