Can this library (or another one) be used to convert GraphQL Mutations into SPARQL Insert, Update, Delete ? For context, I'm using this library for RDF data storage in the browser: https://github.com/beautifulinteractions/node-quadstore#quadstoreprototypesparql It accepts arbitrary SPARQL including Insert/Update/Delete. I would like to make use of that, but I would prefer to author it in GraphQL syntax. Thank you!