arangosh> db.five.all().next();
{ 
  <span class="hljs-string">"_key"</span> : <span class="hljs-string">"15521"</span>, 
  <span class="hljs-string">"_id"</span> : <span class="hljs-string">"five/15521"</span>, 
  <span class="hljs-string">"_rev"</span> : <span class="hljs-string">"15521"</span>, 
  <span class="hljs-string">"name"</span> : <span class="hljs-string">"four"</span> 
}