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/10393b95-5026-0c43-e054-020820215445-row-876d17f304e185ce010ae2931cee1674>