Triple, Quad, or Quint

Does an RDF triple really need to be a Quad? 2003-08-31-DumbillRdfQuad

• or maybe a Quint?

Dorian Taylor (2020) thinks you need a 7-tuple (septuple): including subject, predicate, object, graph, principal, transaction, something else i can't remember right now, probably rdf* (or something related to ACL)

• 2025: intertwingler uses an off-the-shelf rdf quad store for state*