I'm using Protégé to define an ontology and I'm having trouble defining constraints. Let's say I have a class "Node" and the Node can be related t
I have 2 Classes(Agent and Penalty). Also, I have hasPoint(Penalty) and hasWeight(Agent) data properties. When I write this SWRL Rule, I got an error: Agent(?a)
I want to load the wikidata ontology in stardog studio to produce a larger subgraph by extracting the subgraphs of some relevant books, birthplace, education in