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/atom+xml define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/2073ac85-9da0-8465-e054-020820f2d1c3-row-e282b02a58995f2b509d5ae352e1da40>