Pushed YeSPARQL 0.2.0-beta3 with bug fixes and annotated source code https://github.com/joelkuiper/yesparql
would it make sense to substitute the ParameterizedSparqlString with something based on this BNF? https://github.com/apache/jena/blob/jena-3.0.0-rc1/jena-arq/Grammar/Final/tokens_11.txt?