parses.
```??? synchronized static String answer(String s) {
STA Matches m = new Matches();
???  
???     if (match3("cpu usage", s))
STA       return formatDouble(totalPercentage, 2) + "% in Eleu process";
???       
???     if (match3("most active thread", s)) {
STA       Thread t = getMostActiveThread();
STA       return t == null ? "Sorry, no info." : format3("Thread name: *, cpu: *", t.getName(), formatDouble(totalPercentage, 2) + "%");
???     }
???     
???     if (match3("cpu: get measurement interval", s))
STA       return interval + " ms";
???       
???     if (match3("cpu: are you measuring", s))
STA       return "Yes.";
???       
???     if (match3("cpu: get last measurement time", s))
STA       return "" + lastMeasured;
???       
???     if (match("cpu: list all threads", s, m)) {
STA       List<String> l = new ArrayList<String>();
???       for (Map.Entry<Thread, Info> e : infoMap.entrySet()) {
STA         Thread t = e.getKey();
STA         Info info = e.getValue();
STA         l.add(formatDouble(info.percentage, 1) + "% " + format("*", t.getName()));
???       }
STA       return slackSnippet(fromLines(l));
???     }
???     
???     if (match("system load", s, m))
STA       return "System load: " + formatDouble(ManagementFactory.getOperatingSystemMXBean().getSystemLoadAverage(), 1);
???       
???     if (match("cpu: processors", s, m)) {
STA       OperatingSystemMXBean bean = ManagementFactory.getOperatingSystemMXBean();
STA       return "I have " + n(bean.getAvailableProcessors(), bean.getArch() +  " processor") + ".";
???     }
???   
STA return null;
??? }
```