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/cxml define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/329aac85-5fb3-2738-e054-020820f2d1c3-row-f0ffea311c5cacc89566699dd56f0eb4>