/**
  * Display the specified resource.
  *
  * @param  int  $id
  * @return Response
  */
 public function show($id)
 {
     if (is_numeric($id)) {
         $root = Root::with(['etymology', 'cognates', 'tags'])->findOrFail($id);
     } else {
         $root = Root::with(['etymology', 'cognates', 'tags'])->where('root_slug', $id)->firstOrFail();
     }
     return $this->res->includes(['etymology', 'cognates', 'tags'])->item($root)->send();
 }