ql prefix added

Author: anaigmo

ontology/rml-io-bc.ttl

@@ -8,6 +8,7 @@
 @prefix foaf: <http://xmlns.com/foaf/0.1/> .
 @prefix rr: <http://www.w3.org/ns/r2rml#> .
 @prefix oldrml: <http://semweb.mmlab.be/ns/rml#> .
+@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
 @prefix rml: <http://w3id.org/rml/> .
 @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
 @prefix vaem: <http://www.linkedmodel.org/schema/vaem#> .