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i learn ontologies for study purposes. Here i encontered problem when querying. i use pellet as reasoner, because i did some swrl builts-in here i has class named resep_makanan and i want to get all its instance so i write

PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX :<http://www.semanticweb.org/astrid/ontologies/2019/5/mpasiv2#>

SELECT ?resep_makanan
WHERE {
    ?resep_makanan rdf:type :resep_makanan.
}
ORDER BY ?resep_makanan

Please click here to see the error

So, how should i write it correctly?

0 Answers0