SKOS is a widely adopted W3C recommendation. It provides us with a standard way of expressing and exchanging concept schemes like taxonomies and thesauri. SKOS concept schemes are often managed in tools that provide a user-friendly way of managing these.
Discovering hidden facts in steadily growing and complex knowledge graphs is challenging. It‘s not that a proper SPARQL query can‘t retrieve valuable information. A mission critical task often is to get an idea of those queries and the graph.