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:application/ld+json define sql:describe-mode "CBD" DESCRIBE <http://dati.lavoro.gov.it/lod/e083ac85-ac05-113e-e054-020820f2d1c3-row-7aae7e694728a5a6a5f0b5493d1ed247>