Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '&' (0x26) in SPARQL expression at '&' SPARQL query: define sql:big-data-const 0 #output-format:text/html define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/d994ac85-7f4e-4e1b-e054-020820f2d1c3-row-c9caafbf148e89f47ca1cdaf11b60ddb>