!752

/*
if [user says [what kinds of $x are there]]
$z = find all $y where [$y is a kind of $x]
[$a, $b] = take 2 from $z
say [$a and $b]
*/

answer {
  if (!attn()) null;
  
  if "what kinds of $x are there"
$z = find all $y where [$y is a kind of $x]
[$a, $b] = take 2 from $z
say [$a and $b]
  
}