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/ad80ac85-be07-2320-e054-020820d23886-row-c43c36d9e7d018d7285686d72449e1ef>