--- a/spec/latest/index.html	Thu May 12 21:05:34 2011 -0400
+++ b/spec/latest/index.html	Fri May 13 13:32:55 2011 -0400
@@ -1876,6 +1876,7 @@
 {
   "@context":
   {
+    "@vocab": "",
     "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
     "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
     "owl": "http://www.w3.org/2002/07/owl#",