python/rdflib/materialization

from rdflib import Graph

g = Graph()
g.parse("example.ttl", format="turtle")
qres = g.query(
    """CONSTRUCT {?s rdfs:subClassOf ?o}
        {
          ?s rdfs:subClassOf* ?o.
          FILTER (?s != ?o)
       } """)

for s, p, o in qres:
    g.add((s,p,o))

g.serialize(destination='example.ttl', format='turtle')