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:application/rdf+xml define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/d789ac85-57b3-de27-e054-020820d23886-row-62507f6c9cb0e25c6d1909cef4c1d415>