Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '&' (0x26) in SPARQL expression at '&' SPARQL query: define sql:big-data-const 0 define output:format "HTTP+TTL text/turtle" #output-format:text/turtle define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/3c55ac85-a39a-b502-e054-020820d23886-row-5f0933b39867b7e4cd4f6f1151282573>