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/plain define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/e083ac85-ac05-113e-e054-020820f2d1c3-row-0f5d46c5c3f127f3d7e4fc3e8deaea7a>