code: def disjoint_relations(rdf, fix=False):
      
      for conc1, conc2 in sorted(rdf.subject_objects(SKOS.related)):
          if conc2 in sorted(rdf.transitive_objects(conc1, SKOS.broader)):
              if fix:
                  logging.warning(
                      "Concepts %s and %s connected by both "
                      "skos:broaderTransitive and skos:related, "
                      "removing skos:related",
                      conc1, conc2)
                  rdf.remove((conc1, SKOS.related, conc2))
                  rdf.remove((conc2, SKOS.related, conc1))
              else:
                  logging.warning(
                      "Concepts %s and %s connected by both "
                      "skos:broaderTransitive and skos:related, "
                      "but keeping it because keep_related is enabled",
                      conc1, conc2)
docs: Check if the graph contains concepts connected by both of the semantically
      disjoint semantic skos:related and skos:broaderTransitive (S27),
      and optionally remove the involved skos:related relations.
  
      :param Graph rdf: An rdflib.graph.Graph object.
      :param bool fix: Fix the problem by removing skos:related relations that
          overlap with skos:broaderTransitive.