pub type MetaTriple<M, V = ()> = (Triple<(RdfId<V>, M), (<V as IriVocabulary>::Iri, M), (Object<RdfId<V>, RdfLiteral<M, <V as IriVocabulary>::Iri>>, M)>, M);pub type MetaTriple<M, V = ()> = (Triple<(RdfId<V>, M), (<V as IriVocabulary>::Iri, M), (Object<RdfId<V>, RdfLiteral<M, <V as IriVocabulary>::Iri>>, M)>, M);