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" DESCRIBE <http://dati.lavoro.gov.it/lod/a38eac85-9d06-622b-e054-020820d23886-row-2084ee271ff0ca1f42b1cc48876ced2f>