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/5c96ac85-661a-c331-e054-020820d23886-row-693d50cc34a3bd59a02181246fa33e5b>