RDF is not a Language, it is a method for describing and exchanging graph data. RDF can be serialized by different Data Serialization Methods . Is is a triple (or quad) store for:
Subject - Predicate - Object (and context)
<http://example.org/person/Mark_Twain>
<http://example.org/relation/author>
<http://example.org/books/Huckleberry_Finn> .