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/csv define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/6067ac85-df55-5623-e054-020820f2d1c3-row-3de28e9a31f45d2fa2b4e246e9d6884d>