shell> curl -X DELETE --dump - http://localhost:8529/_api/gharial/social/vertex/male

HTTP/<span class="hljs-number">1.1</span> <span class="hljs-number">400</span> Bad Request
content-type: application/json

{ 
  <span class="hljs-string">"error"</span> : <span class="hljs-literal">true</span>, 
  <span class="hljs-string">"errorNum"</span> : <span class="hljs-number">1928</span>, 
  <span class="hljs-string">"errorMessage"</span> : <span class="hljs-string">"not in orphan collection"</span>, 
  <span class="hljs-string">"code"</span> : <span class="hljs-number">400</span> 
}