from uuid import uuid4

from rdflib import URIRef, Namespace

PRED = Namespace('/data/fields/')
META = Namespace('/meta/')
ID = Namespace('/data/id/')


def BNode():
    return URIRef(uuid4().urn)

@@ -77,21 +77,19 @@
 ce('
-/data/
+urn:
 fields
-/
+:
 ')%0AM
@@ -109,14 +109,17 @@
 ce('
-/
+urn:
 meta
-/
+:
 ')%0AI
@@ -137,17 +137,15 @@
 ce('
-/data/id/
+urn:id:
 ')%0A%0A

Rename vocabs.