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/csv define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/7f71ac85-4723-a415-e054-020820d23886-row-6edf4370e7d9bcd5e82d2ff9a70de3dc>