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


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Loading an Ontology in Python...


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Virtuoso OWL 2 DL Reasoning...


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


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


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


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Does JENA API support OWL 2?...


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


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


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OWL reasoner not recognizing negated restriction?...


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


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Problem of reading OWL/XML...


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uniqueness of owl n-ary relationships...


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


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


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


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


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


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


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


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


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


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Inconsistencies in OWL classes...


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


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


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Converting UML to OWL Ontology...


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Missing SWRL tab in Protege 4...


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units of measurement in owl and rdf...


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Removing unwanted superclass answers in SPARQL...


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How-to serialize OWLClassExpression to triples...


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