https://volodymyrpavlyshyn.medium.com/hypergraphs-in-relation-model-26d2ed46a8c0

Last time, we modeled #hypergraphs as undirected graphs. Today, we will examine the option of directed hypergraphs in relational models.

I still recommend going with #namedgraphs if you can model your domain in a more # rdf-friendly way. Try this model if you have a use case of a directed hypergraph with complex relations.