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/ff98ac85-826a-3334-e054-020820d23886-row-9f094e65a1b1b4556ddfdfa84f0ef519>