Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '%' (0x25) in SPARQL expression at '%' SPARQL query: define%20sql%3Adescribe-mode%20%22CBD%22%20%20DESCRIBE%20%3Chttp%3A%2F%2Fen.wikipedia.org%2Fwiki%2FCategory%3A17th-century_English_scientists%3Foldid%3D951434149%26ns%3D14%3E