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/plain define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/3c55ac85-a39a-b502-e054-020820d23886-row-70d31f68d1f17fe09883020a8e7bb1a4>