Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '%' (0x25) in SPARQL expression at '%' SPARQL query: #output-format:text%2Fhtml define%20sql%3Adescribe-mode%20%22CBD%22%20%20DESCRIBE%20%3Chttp%3A%2F%2Fen.wikipedia.org%2Fwiki%2FCategory%3APolitical_office-holders_by_insular_area_of_the_United_States%3Foldid%3D910179517%26ns%3D14%3E