- rdf_update(+Subject, +Predicate, +Object, +Action) is det
- Replaces one of the three fields on the matching triples
depending on Action:
- subject(Resource)
- Changes the first field of the triple.
- predicate(Resource)
- Changes the second field of the triple.
- object(Object)
- Changes the last field of the triple to the given resource or
literal(Value).
- graph(Graph)
- Moves the triple from its current named graph to Graph.