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:application%2Fmicrodata%2Bjson DESCRIBE %3Chttp://dati.emilia-romagna.it/id/ibc/IT-ER-IBC-037056-001/v-equipment/griglie-metalliche-esposizioni-pannelli-espositivi-pico-glass-videoproiettore-collegabile-al-computer%3E