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/html define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/119dac85-927d-0b36-e054-020820d23886-row-f7417b11f8e29f0fb69a15c7ccfc9909>