Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '%' (0x25) in SPARQL expression at '%' SPARQL query: #output-format:text%2Fhtml define sql:gs-app-callback "ODS" define%20sql%3Adescribe-mode%20%22CBD%22%20%20DESCRIBE%20%3Chttp%3A%2F%2Flinkeddata.uriburner.com%2Fproxy-iri%2Ffd709181e37bd6b8809c1773b56a450f80690557%3E