OrderBy(Project(Extend(Extend(AggregationJoin(Aggregation(??agg1: ?feature, COUNT,
                                              {},
                                              G1=Group((?product2),
                                                 Filter((?feature != <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>) && (?product2 != <http://example.org/car>),
                                                 BGP( <http://example.org/car> ?feature ?featureValue .
                                                  ?product2 ?feature ?featureValue .
                                                  ?product2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/item>)))),
                                              Aggregation(??agg2: ?product2, SAMPLE,
                                              {}, G1)),
                              ?fCount,
                              ??agg1),
                       ?product,
                       ??agg2),
                {?fCount, ?product}), (?fCount))