SPARQL Protocol
> SPARQL is a query language and protocol for RDF. This document specifies the SPARQL Protocol; it uses WSDL 2.0 to describe a means for conveying SPARQL queries to an SPARQL query processing service and returning the query results to the entity that requested them.
Of interest is that there are HTTP bindings specifically mentioned in the WSDL 2.0 document.
Of interest is that there are HTTP bindings specifically mentioned in the WSDL 2.0 document.