OrderBy(Project(Extend(Extend(AggregationJoin(Aggregation(??agg1: ?genre, SAMPLE,
                                              {},
                                              G1=Group((?genre),
                                                 BGP( ?s <http://schema.org/genre> ?genre))),
                                              Aggregation(??agg2: ?genre, COUNT,
                                              {}, G1)),
                              ?genre,
                              ??agg1),
                       ?count,
                       ??agg2),
                {?genre, ?count}), (desc (?count)))