construct.sparql

CONSTRUCT {
    ?x rdfs:subClassOf ?z .
}
FROM <minimal-subclass.turtle>
WHERE {
    ?x rdfs:subClassOf ?y .
    ?y rdfs:subClassOf ?z .
}

gistfile1.txt

% roqet construct.sparql
roqet: Querying from file construct.sparql
roqet: Query has a graph result:
roqet: Total 0 triples

minimal-subclass.turtle

@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix e: <http://example.org/> .

<e:assessment>
    e:name "Assessment".

<e:closed-form-assessment>
    rdfs:subClassOf e:assessment;
    e:name "Closed Form Assessment".

<e:multiple-choice-assessment>
    rdfs:subClassOf e:closed-form-assessment;
    e:name "Multiple Choice Assessment".