knowrob-rdf_has(test:'Coldwater',owl:'equivalentClass',Obj) return Obj=__testrdf.owl#__Description3;how can I get the details of the __Decripton3?

edit

when i use the commond: rdf_has(test:'Coldwater',owl:'equivalentClass',Obj). it returns Obj=__testrdf.owl#__Description3. how can I get the details about the __testrdf.owl#__Description3 ? here is my owl defination:

<!-- http://www.semanticweb.org/jackon/ontologies/2018/11/test#Coldwater -->

<owl:Class rdf:about="http://www.semanticweb.org/jackon/ontologies/2018/11/test#Coldwater">
    <owl:equivalentClass>
        <owl:Class>
            <owl:intersectionOf rdf:parseType="Collection">
                <rdf:Description rdf:about="http://www.semanticweb.org/jackon/ontologies/2018/11/test#Water"/>
                <owl:Restriction>
                    <owl:onProperty rdf:resource="http://www.semanticweb.org/jackon/ontologies/2018/11/test#StorageIn"/>
                    <owl:allValuesFrom rdf:resource="http://www.semanticweb.org/jackon/ontologies/2018/11/test#Fridge"/>
                </owl:Restriction>
            </owl:intersectionOf>
        </owl:Class>
    </owl:equivalentClass>
    <rdfs:subClassOf rdf:resource="http://www.semanticweb.org/jackon/ontologies/2018/11/test#Cold"/>
    <rdfs:subClassOf rdf:resource="http://www.semanticweb.org/jackon/ontologies/2018/11/test#Water"/>
    <rdfs:subClassOf>
        <owl:Restriction>
            <owl:onProperty rdf:resource="http://www.semanticweb.org/jackon/ontologies/2018/11/test#StorageIn"/>
            <owl:allValuesFrom rdf:resource="http://www.semanticweb.org/jackon/ontologies/2018/11/test#Fridge"/>
        </owl:Restriction>
    </rdfs:subClassOf>
</owl:Class>