How do you determine predicate "direction"?...

Loading an Ontology in Python...

Virtuoso OWL 2 DL Reasoning...

OWL2 Ontology creates a "ghost" RDFS ontology due to missing `#`...

Combining reasoners in OWL API for OWL DL + SQWRL support...

Problem with setting up config for Fuseki server - Exception in initialization: org/apache/jena/reas...

Does JENA API support OWL 2?...

Member of an owl:Class versus owl:NamedIndividual...

What does rdfs:domain and rdfs:range mean?...

OWL reasoner not recognizing negated restriction?...

what does the @prefix do in sparql?...

Problem of reading OWL/XML...

uniqueness of owl n-ary relationships...

DBPedia SPARQL query "NaturalPerson" brings back no data?...

Extract a fraction of an ontology that is expressed by OWL-Full...

writing an swrl rule that checks if an individual with some condition doesn't exist then infer s...

When defining a class in OWL, how to constrain that an object property must refer to the same indivi...

How to create an ontology from raw data (CSV)?...

How to structure an OWL property that be "Nobody"?...

Is there a way in Jena to see that an OntClass is coming from an imported ontology?...

Can you assert an object property based on the property of another individual using the OWL 2 Functi...

How to perform existential quantification inferences in ontologies?...

Inconsistencies in OWL classes...

When to use rdf:Type vs rdfs:subClassOf...

Searching for a naming convention for properties in an OWL ontology when coming from an UML Model...

Converting UML to OWL Ontology...

Missing SWRL tab in Protege 4...

units of measurement in owl and rdf...

Removing unwanted superclass answers in SPARQL...

How-to serialize OWLClassExpression to triples...