[Subject-predicate-object triples](https://en.wikipedia.org/wiki/Semantic_triple) (semantic triples, RDF triples or simply triples) serve as the basic units of data representation within an [[ontology]]. 1. **Subject** is a resource being described by the triple. 2. **Predicate** describes the relationship between the subject and the object. 3. **Object** is a resource that is related to the subject.