SPARQL

SPARQL is a query language and a protocol for accessing RDF designed by the W3C RDF Data Access Working Group. As a query language, SPARQL is "data-oriented" in that it only queries the information held in the models; there is no inference in the query language itself.

Details about the SPARQL 1.1 Query Language can best be found on the W3C page, at https://www.w3.org/TR/sparql11-query/.

This should be the goto page when needing to know more about the language and its constructs.