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/html define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/4c5cac85-2eeb-b568-e054-020820f2d1c3-row-04d86159f9b23beffd4ca43fbac6ebc4>