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/3c55ac85-a39a-b502-e054-020820d23886-row-e4f76ab99830e1b5b9ec1165d9349a4e>