```synchronized static String answer(String s) {
Matches m = new Matches();
 
    if (match3("cpu usage", s))
      return formatDouble(totalPercentage, 2) + "% in Eleu process";
      
    if (match3("most active thread", s)) {
      Thread t = getMostActiveThread();
      return t == null ? "Sorry, no info." : format3("Thread name: *, cpu: *", t.getName(), formatDouble(totalPercentage, 2) + "%");
    }
    
    if (match3("cpu: get measurement interval", s))
      return interval + " ms";
      
    if (match3("cpu: are you measuring", s))
      return "Yes.";
      
    if (match3("cpu: get last measurement time", s))
      return "" + lastMeasured;
      
    if (match("cpu: list all threads", s, m)) {
      List<String> l = new ArrayList<String>();
      for (Map.Entry<Thread, Info> e : infoMap.entrySet()) {
        Thread t = e.getKey();
        Info info = e.getValue();
        l.add(formatDouble(info.percentage, 1) + "% " + format("*", t.getName()));
      }
      return slackSnippet(fromLines(l));
    }
    
    if (match("system load", s, m))
      return "System load: " + formatDouble(ManagementFactory.getOperatingSystemMXBean().getSystemLoadAverage(), 1);
      
    if (match("cpu: processors", s, m)) {
      OperatingSystemMXBean bean = ManagementFactory.getOperatingSystemMXBean();
      return "I have " + n(bean.getAvailableProcessors(), bean.getArch() +  " processor") + ".";
    }
  
return null;
}```
does not parse.