dropping dc fails after rebase

Author: maparent

apps/website/public/schema/dg_core.ttl

@@ -1,6 +1,7 @@
 @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
 @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
 @prefix : <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix dc: <http://purl.org/dc/elements/1.1/> .
 @prefix dct: <http://purl.org/dc/terms/> .
 @prefix owl: <http://www.w3.org/2002/07/owl#> .
 @prefix vs: <http://www.w3.org/2003/06/sw-vocab-status/ns#> .