Virtuoso 37000 Error SP030: SPARQL compiler, line 0: Bad character '&' (0x26) in SPARQL expression at '&' SPARQL query: define sql:big-data-const 0 define sql:describe-mode "CBD" #output-format:application/odata+json define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/7c7cac85-dcdd-661c-e054-020820d23886-row-44f73c9469ed236b9d34b6d83d8d6292>