shell> curl -X DELETE --data-binary @- --dump - http://localhost:8529/_api/gharial/social/edge/relation

HTTP/1.1 200 OK
content-type: application/json
etag: 1468196471

{ 
  "error" : false, 
  "code" : 200, 
  "graph" : { 
    "name" : "social", 
    "edgeDefinitions" : [ ], 
    "orphanCollections" : [ 
      "female", 
      "male" 
    ], 
    "_id" : "_graphs/social", 
    "_rev" : "1468196471" 
  } 
}