PREFIX rdf: <http://www.w3.org/1999/02/22-rdf----p177
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

1.mas dinei ola ta subject kai ta object:
SELECT DISTINCT  ?subject ?object
	WHERE { ?subject rdfs:subClassOf ?object }

2.mas dinei ola ta individuals KAI APO DIPLA MAS DEIXNEI TI TYPOU EINAI:
SELECT DISTINCT*
WHERE {
?individual rdf:type ?type .
OPTIONAL { ?type rdfs:subClassOf ?class }
}
ORDER BY ?class

3.Edw vlepw mono classes san object (upoklaseis k uperklaseis)
SELECT DISTINCT ?subject ?object
	WHERE { ?subject rdfs:subClassOf ?object. ?object rdf:type owl:Class  }

4.edw pairnw ola ta object property POU EINAI UPOKLASEIS
SELECT DISTINCT ?subject ?object
	WHERE { ?subject rdfs:subPropertyOf ?object  }

5.edw vlepw me poia klash sxetizontai ta individuals mou:
SELECT DISTINCT ?individual ?class 
WHERE { 
    ?individual rdf:type owl:NamedIndividual .
    ?individual rdf:type ?class .
}
6. mas dinei oles tis upoklaseis tou place
PREFIX an: <http://www.semanticweb.org/georgia/ontologies/2020/10/untitled-ontology-21#>

select ?subclass where { 
  ?subclass rdfs:subClassOf an:place.
}

7.edw m dinei ta subproperty tou is_isolated_in PREFIX an: <http://www.semanticweb.org/georgia/ontologies/2020/10/untitled-ontology-21#>
select ?subclass where { 
  ?subclass rdfs:subPropertyOf an:is_isolated_in.
}

8.edw m dinei ola ta stigmiotypa mias sygkekrimenhs klashs
PREFIX an: <http://www.semanticweb.org/georgia/ontologies/2020/10/untitled-ontology-21#>
SELECT ?i  WHERE  {  ?i rdf:type an:european_country.  }


9.edw m dinei SE OPOIA SUBCLASS exei mpei timh 0 eite se property eite se klash
select ?s ?p ?d where {
  ?s rdfs:subClassOf [ a owl:Restriction ; 
                       owl:qualifiedCardinality "0"^^xsd:nonNegativeInteger ;
                       owl:onProperty ?p ;
                       owl:onClass ?d ]}