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/974bac85-2fe6-b00a-e054-020820f2d1c3-row-182cab8073f9b3a3ea3ea736b39c2c41>