Rdf.Sparql_protocolSourceRDF Sparql protocol.
http://www.w3.org/TR/rdf-sparql-protocol/
type out_message = | OkThis is for queries not returning results; by now the Sparql protocol does not specify such queries, but it can be useful for example for 4store, which allows to post updates.
*)| Result of Sparql.query_result| Error of error