GenericRDFGenerator rdfGen = new GenericRDFGenerator(null);
// Add the models in;
R2RMLMappingIdentifier modelIdentifier = new R2RMLMappingIdentifier(
"generic-model", new URL(r2rmlURI));
rdfGen.addModel(modelIdentifier);
//String filename = "context/events.json";
//String contextName = "context/events_context.json";
logger.info("Loading json file: " + jsonContext);
StringWriter sw = new StringWriter();