Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '%' (0x25) in SPARQL expression at '%' SPARQL query: define sql:big-data-const 0 #output-format:text%2Fx-html-script-ld%2Bjson define input:default-graph-uri DESCRIBE%20%3Chttp%3A%2F%2Fhu.dbpedia.org%2Fresource%2FMartos_Ferenc_%28b%EF%BF%BD%EF%BF%BDnyam%EF%BF%BD%EF%BF%BDrn%EF%BF%BD%EF%BF%BDk%29%3E