relationships, let's add this to our ontology. Let's Let's add this information to the graph. Now, as as a help, it's helpful to be aware that there are existing taxonomies that people have been working on for the last 15 to 20 years. Things like schema.org, which has a whole set of terms and relationships, so you don't have to reinvent the wheel. In fact, you it's to your advantage to use some of these ontologies. FOAF, Friend of a Friend, for modeling social networks. The Dublin Core, which was an early an early attempt to come up with terms for describing uh research papers and books and so forth. So, there's a whole series of things. In fact, Wikipedia is based on an ontology called DBpedia. So, when you do a search on Wikipedia, it's looking things up in its giant graph database.